Eustace m. Greek Εὔσταχυς 'fruitful, fecund'.

Belgium

Latin

● c1130 Eustachius (nom) CartStBert 12

Brabant

Latin

● 1312 Eustachius (nom) JeanIII p. 42, Eustassius (nom) ibid. p. 43, Eustatius (nom) ibid. p. 37

England

Latin

● 1183 Eustacii (gen) BoldonBuke p. 3; 1185x1186 Eustacio (abl) PR-XXXVI p. 15, Eustacius (nom) ibid. p. 15; 1222 Eustachii (gen) StPaulDom p. 19, Eustachius (nom) ibid. p. 14; 1256 Eustacii (gen) EARNb p. 5; 1279–80 Eustacius (nom) WaHR-SK p. 36

Early Modern English

● 1530 Ewstace PP-HenV p. 15; 1574/5 Ustice RegBisham p. 3; 1579 Ustice ibid. p. 4; 1582 Ustis ibid. p. 4; 1586 Eustace DEmar-vol2 p. 13; 1593 Eustace ibid. p. 27

France

Latin

● 1079x1101 Eustachio (abl) CartStPC XXXVII; a1089x1101 Eustachius (nom) ibid. XXXIX; 1090x1101 Eustachius (nom) ibid. XLIII; 1093 Eustachii (gen) ibid. VI; 1101x1129 Eustachio (abl) ibid. XXIII; 1115 Eustachius (nom) CartNDJosaphat VI; 1120 Eustachius (nom) ibid. VIII; 1123 Eustachii (gen) ibid. XII; c1140 Eustachium (acc) CartNDdOurscamp LXXXIII; c1160 Eustachii (gen) ibid. XVI; 1168 Eustacius (nom) clairvaux-12thc 134; 1208 Eustachius (nom) CartNDdOurscamp LXXVI; 1257 Eustachius (nom) ArrestReg-volI IX, Pentecost; 1259 Eustachius (nom) ibid. XXII, Pentecost; 1301 Estacius (nom) MemPic-vol17 p. 218, Eustachii (gen) ibid. p. 202, Eustachius (nom) ibid. p. 202, Eustacius (nom) ibid. p. 226; 1378 Eustachio (dat) hanquetvol1 237, Eustacio (dat) ibid. 538, Eustacius (nom) ibid. 1761

Old French

● 1327 Eustace MemDocMan-2 p. 180, Eustache ibid. p. 180

Middle French

● 1388 Eustace thierry; 1418 Eustace HGParis p. 383, Eustasse ibid. p. 376; 1421 Eustace favier 845; 1493 Eustace MSR1838 p. 379; 1561 Eustace RegPCC-1 p. 2; 1562 Eustace ibid. p. 7; 1563 Eustace ibid. p. 19; 1565 Eustace ibid. p. 191; 1566 Eustace ibid. p. 205; 1567 Eustace ibid. p. 289; 1568 Eustace ibid. p. 384; 1571 Eustace ibid. p. 437

Hungary

Latin

● 1351 Eustachio (abl) CDH-IX-II III