Eximie Domine et mihi carissime Gemma Frisius (Jemme Reinerszoon) (*1508 – †1555), Netherlandish leading theoretical mathematician and practicing physician in Louvain, scholar, and tutor of Gerardus Mercator, studied medicine, mathematics and astronomy at the University in Louvain (1526), where he became a professor of medicine and mathematics, he applied his mathematical expertise to geography, astronomy and map making (HALLYN; VAN ORTROY)⌊GemmaGemma Frisius (Jemme Reinerszoon) (*1508 – †1555), Netherlandish leading theoretical mathematician and practicing physician in Louvain, scholar, and tutor of Gerardus Mercator, studied medicine, mathematics and astronomy at the University in Louvain (1526), where he became a professor of medicine and mathematics, he applied his mathematical expertise to geography, astronomy and map making (HALLYN; VAN ORTROY)⌋.

Salutem tibi, Barbara, wife of Gemma Frisius (Iacobina), wife of Regnier Gemma from 1534 (REICH 2005, p. 324)⌊Iacobina[e]Barbara, wife of Gemma Frisius (Iacobina), wife of Regnier Gemma from 1534 (REICH 2005, p. 324)⌋ tuae cum prolibus, et omnia fausta precor.

Non potui committere, cum is nobilis generosusque iuvenis dominus Krzysztof Konarski (*before 1526 – †ca. 1574), in 1557-1565, as a royal secretary, he undertook several diplomatic missions; 1543 scribe at the royal chancellery, later royal secretary, 1568 member of the Maritime Commission, before 1568 starost of Jurborg (KOROLKO, p. 210)⌊Cristophorus ConarskyKrzysztof Konarski (*before 1526 – †ca. 1574), in 1557-1565, as a royal secretary, he undertook several diplomatic missions; 1543 scribe at the royal chancellery, later royal secretary, 1568 member of the Maritime Commission, before 1568 starost of Jurborg (KOROLKO, p. 210)⌋ a serenissimo Sigismund I Jagiellon (Zygmunt I) (*1467 – †1548), King of Poland and Grand Duke of Lithuania (1506-1548); Duke of Głogów (Glogau) (1499-1506), Duke of Opava (1501-1506), Governor of Silesia (1504-1506); son of King Kazimierz IV Jagiellon and Elisabeth of Austria⌊rege meoSigismund I Jagiellon (Zygmunt I) (*1467 – †1548), King of Poland and Grand Duke of Lithuania (1506-1548); Duke of Głogów (Glogau) (1499-1506), Duke of Opava (1501-1506), Governor of Silesia (1504-1506); son of King Kazimierz IV Jagiellon and Elisabeth of Austria⌋ ad aulam vestram missus sit, quin te litteris meis inviserem, licet vicaria manu scriptis, dictaturae enim, etiam mihi invito, accessit magistratus, eo quod calamo iam a tribus mensibus uti nequeam.

Superiori anno per Eustathius Knobelsdorf (Constans Alliopagus) (*1519 – †1571), neo-Latin poet, studied at the universities in Frankfurt an der Oder (1534-1544), Wittenberg (1538), Leipzig, Louvain (1540), Paris, and Orleans; from 1533 Dantiscus provided financial support for his education; 1544 secretary of the Ermland (Warmia) Chapter; 1546 Canon of Ermland; 1546 Canon of Wrocław (Breslau); 1546-1548 Chancellor of the Ermland Chapter; 1548-1551 administrator of the Chapter's estate in Allenstein (Olsztyn); 1552 Custos of Ermland; 1553 Vicar General of the bishopric of Ermland; 1558-1564 administrator of the diocese of Ermland in the absence of Bishop Stanisław Hozjusz; 1559 Chancellor of the Wrocław Chapter; 1565 Dean of the Wrocław Chapter; 1567 General Judicial Vicar of the diocese of Wrocław (BORAWSKA 1996 Życie, p. 70, 103; KOPICZKO 2, p. 152; SBKW, p. 152; KNOBELSDORF)⌊Eustachium meum a KnobelsdorffEustathius Knobelsdorf (Constans Alliopagus) (*1519 – †1571), neo-Latin poet, studied at the universities in Frankfurt an der Oder (1534-1544), Wittenberg (1538), Leipzig, Louvain (1540), Paris, and Orleans; from 1533 Dantiscus provided financial support for his education; 1544 secretary of the Ermland (Warmia) Chapter; 1546 Canon of Ermland; 1546 Canon of Wrocław (Breslau); 1546-1548 Chancellor of the Ermland Chapter; 1548-1551 administrator of the Chapter's estate in Allenstein (Olsztyn); 1552 Custos of Ermland; 1553 Vicar General of the bishopric of Ermland; 1558-1564 administrator of the diocese of Ermland in the absence of Bishop Stanisław Hozjusz; 1559 Chancellor of the Wrocław Chapter; 1565 Dean of the Wrocław Chapter; 1567 General Judicial Vicar of the diocese of Wrocław (BORAWSKA 1996 Życie, p. 70, 103; KOPICZKO 2, p. 152; SBKW, p. 152; KNOBELSDORF)⌋, cum me eo tempore ad te scribendi in multis occupationibus deficeret otium, tibi dici commisi de illa mathesi, de qua ad me cf. Gemma Frisius to Ioannes DANTISCUS Leuven (Lovanium), 1541-07-20, CIDTC IDL 2467⌊scripsisticf. Gemma Frisius to Ioannes DANTISCUS Leuven (Lovanium), 1541-07-20, CIDTC IDL 2467⌋, quod eam auctor, Ermland (Warmia, Varmia), diocese and ecclesiastical principality in northeastern Poland, 1466-1772 within the Kingdom of Poland, Royal Prussia⌊ecclesiae meaeErmland (Warmia, Varmia), diocese and ecclesiastical principality in northeastern Poland, 1466-1772 within the Kingdom of Poland, Royal Prussia⌋ canonicus, doctor Nicolaus Copernicus (Mikołaj Kopernik) (*1473 – †1543), humanist, physician and astronomer, doctor of canon law; nephew of Łukasz Watzenrode, Bishop of Ermland; 1497-1543 Canon of Ermland (Warmia); 1511-1513, 1520, 1524-1525, 1529 Chancellor of the Ermland Chapter; 1523 General Administrator of the bishopric after the death of Fabian von Lusian (Luzjański) (KOPICZKO 2, p. 161; SBKW, p. 123-124)⌊Nicolaus CoperniciusNicolaus Copernicus (Mikołaj Kopernik) (*1473 – †1543), humanist, physician and astronomer, doctor of canon law; nephew of Łukasz Watzenrode, Bishop of Ermland; 1497-1543 Canon of Ermland (Warmia); 1511-1513, 1520, 1524-1525, 1529 Chancellor of the Ermland Chapter; 1523 General Administrator of the bishopric after the death of Fabian von Lusian (Luzjański) (KOPICZKO 2, p. 161; SBKW, p. 123-124)⌋, qui is diebus in extremis fere laborat paralisi affectus, cuidam Georg Joachim Rheticus (*1514 – †1574), mathematician, cartographer, physician, pupil of Nicolaus Copernicus⌊mathematicoGeorg Joachim Rheticus (*1514 – †1574), mathematician, cartographer, physician, pupil of Nicolaus Copernicus⌋ evulgandam typis tradiderit. Iussi et cf. In Copernici libellum epigramma shortly before 1541-06-27, CIDTC IDP 57⌊epigramma meumcf. In Copernici libellum epigramma shortly before 1541-06-27, CIDTC IDP 57⌋ tibi legendum ostendi, quod rei ipsius et Nicolaus Copernicus (Mikołaj Kopernik) (*1473 – †1543), humanist, physician and astronomer, doctor of canon law; nephew of Łukasz Watzenrode, Bishop of Ermland; 1497-1543 Canon of Ermland (Warmia); 1511-1513, 1520, 1524-1525, 1529 Chancellor of the Ermland Chapter; 1523 General Administrator of the bishopric after the death of Fabian von Lusian (Luzjański) (KOPICZKO 2, p. 161; SBKW, p. 123-124)⌊auctorisNicolaus Copernicus (Mikołaj Kopernik) (*1473 – †1543), humanist, physician and astronomer, doctor of canon law; nephew of Łukasz Watzenrode, Bishop of Ermland; 1497-1543 Canon of Ermland (Warmia); 1511-1513, 1520, 1524-1525, 1529 Chancellor of the Ermland Chapter; 1523 General Administrator of the bishopric after the death of Fabian von Lusian (Luzjański) (KOPICZKO 2, p. 161; SBKW, p. 123-124)⌋ non vanas habet laudes.[1] Quid porro cum ea excusione fiat, hucusque me praeterit.

Tu, si quid habes in eadem mathesi vel forsan in ea, quam profiteris, medica facultate a te editum, per hunc Sigismund I Jagiellon (Zygmunt I) (*1467 – †1548), King of Poland and Grand Duke of Lithuania (1506-1548); Duke of Głogów (Glogau) (1499-1506), Duke of Opava (1501-1506), Governor of Silesia (1504-1506); son of King Kazimierz IV Jagiellon and Elisabeth of Austria⌊serenissimi regis meiSigismund I Jagiellon (Zygmunt I) (*1467 – †1548), King of Poland and Grand Duke of Lithuania (1506-1548); Duke of Głogów (Glogau) (1499-1506), Duke of Opava (1501-1506), Governor of Silesia (1504-1506); son of King Kazimierz IV Jagiellon and Elisabeth of Austria⌋ Krzysztof Konarski (*before 1526 – †ca. 1574), in 1557-1565, as a royal secretary, he undertook several diplomatic missions; 1543 scribe at the royal chancellery, later royal secretary, 1568 member of the Maritime Commission, before 1568 starost of Jurborg (KOROLKO, p. 210)⌊oratoremKrzysztof Konarski (*before 1526 – †ca. 1574), in 1557-1565, as a royal secretary, he undertook several diplomatic missions; 1543 scribe at the royal chancellery, later royal secretary, 1568 member of the Maritime Commission, before 1568 starost of Jurborg (KOROLKO, p. 210)⌋ ad me transmittas. Referetur tibi per occasionem non indigna gratia. Si qua etiam in re ipsi domino Krzysztof Konarski (*before 1526 – †ca. 1574), in 1557-1565, as a royal secretary, he undertook several diplomatic missions; 1543 scribe at the royal chancellery, later royal secretary, 1568 member of the Maritime Commission, before 1568 starost of Jurborg (KOROLKO, p. 210)⌊oratoriKrzysztof Konarski (*before 1526 – †ca. 1574), in 1557-1565, as a royal secretary, he undertook several diplomatic missions; 1543 scribe at the royal chancellery, later royal secretary, 1568 member of the Maritime Commission, before 1568 starost of Jurborg (KOROLKO, p. 210)⌋ usui esse possis, te ob veterem meam in te benevolentiam oro, ne pigrere illi tuam praestare operam.

Sunt mihi duo nepotes, quos, sopitis his bellis, quibus orbis Christianus ubique tumultuatur, ad vos mittere statui. Tu – quaeso – me edoceas, quomodo res litteraria quosve lectores habeat, et quibus impensis annuis se apud vos sustineri possint, in eo mihi rem apprime gratam facturus.

Mi carissime Gemma, vale Barbara, wife of Gemma Frisius (Iacobina), wife of Regnier Gemma from 1534 (REICH 2005, p. 324)⌊uxoremque tuamBarbara, wife of Gemma Frisius (Iacobina), wife of Regnier Gemma from 1534 (REICH 2005, p. 324)⌋ meo nomine complectere, etiam si multis volueris vicibus, illique et omnibus amicis salutem dices.

Ex arce mea Heilsberg (Lidzbark Warmiński, Heilsberga), town in Ermland (Warmia), the main seat of the bishops of Ermland⌊HeilsbergHeilsberg (Lidzbark Warmiński, Heilsberga), town in Ermland (Warmia), the main seat of the bishops of Ermland⌋, XXIX Ianuarii 1543.

[1 ] The term mathesis undoubtedly refers here to Copernicus’ work cf. Nicolaus Copernicus, De revolutionibus orbium caelestium, Nuremberg, 1543 ⌊De revolutionibuscf. Nicolaus Copernicus, De revolutionibus orbium caelestium, Nuremberg, 1543 ⌋; however, the epigram of praise that Dantiscus created for Nicolaus Copernicus (Mikołaj Kopernik) (*1473 – †1543), humanist, physician and astronomer, doctor of canon law; nephew of Łukasz Watzenrode, Bishop of Ermland; 1497-1543 Canon of Ermland (Warmia); 1511-1513, 1520, 1524-1525, 1529 Chancellor of the Ermland Chapter; 1523 General Administrator of the bishopric after the death of Fabian von Lusian (Luzjański) (KOPICZKO 2, p. 161; SBKW, p. 123-124)⌊CopernicusNicolaus Copernicus (Mikołaj Kopernik) (*1473 – †1543), humanist, physician and astronomer, doctor of canon law; nephew of Łukasz Watzenrode, Bishop of Ermland; 1497-1543 Canon of Ermland (Warmia); 1511-1513, 1520, 1524-1525, 1529 Chancellor of the Ermland Chapter; 1523 General Administrator of the bishopric after the death of Fabian von Lusian (Luzjański) (KOPICZKO 2, p. 161; SBKW, p. 123-124)⌋ was only placed at the beginning of a fragment of De revolutionibus (book I, chapters 13 and 14), published separately by Georg Joachim Rheticus (*1514 – †1574), mathematician, cartographer, physician, pupil of Nicolaus Copernicus⌊Joachim RheticusGeorg Joachim Rheticus (*1514 – †1574), mathematician, cartographer, physician, pupil of Nicolaus Copernicus⌋ in 1542 under the title cf. Nicolaus Copernicus (Mikołaj Kopernik), De lateribus et angulis triangulorum, tum planorum rectilineorum, tum Sphaericorum, libellus eruditissimus et utilissimus, cum ad plerasque Ptolemaei demonstrationes intelligendas … scriptus a Clarissimo et doctissimo viro Domino Nicolao Copernico …, Wittenberg, Ioannes LUFFT, 1542 ⌊De lateribus et angulis triangulorum, tum planorum rectilineorum, tum sphaericorumcf. Nicolaus Copernicus (Mikołaj Kopernik), De lateribus et angulis triangulorum, tum planorum rectilineorum, tum Sphaericorum, libellus eruditissimus et utilissimus, cum ad plerasque Ptolemaei demonstrationes intelligendas … scriptus a Clarissimo et doctissimo viro Domino Nicolao Copernico …, Wittenberg, Ioannes LUFFT, 1542 ⌋