Ivo m. Old French Yve(s), Yvon of uncertain origin but possibly related to Gaulish ivo, Proto-Germanic *īwaz 'yew'.

England

Latin

● 1189 Ivo (nom) GASurv p. 106, Ivonis (gen) ibid. p. 108; 1349 Yvone (abl) SocAntNor-3-3 no. 11; 1381 Ive (nom) Suffolk1381 p. 73

France

Latin

● 1029x1033 Yvo (nom) CartStPC XII; 1050 Ivonis (gen) St-Bernard-Romans no. 100; 1090x1101 Ivonis (gen) CartStPC XLIII; 1093 Ivo (nom) ibid. VI; 1102x1144 Ivo (nom) ibid. XLV; 1107 Ivo (nom) ibid. V, Ivone (abl) ibid. XVII; 1127 Ivo (nom) ibid. XIX, Ivonis (gen) ibid. XIX; c1147 Ivonis (gen) CartNDdOurscamp LXII; c1170 Yvo (nom) ibid. LXXXIV; 1180 Ivonis (gen) RotScaNor pp. 10-11; 1187 Ivonis (gen) CartNDdOurscamp LVII; 1190 Ivo (nom) ibid. CIII; 1224 Yvo (nom) ChartCaen2 16; 1269 Yvonis (gen) NDParisII 2-III; 1270 Yvonis (gen) ibid. 2-XLI; 1273 Yvo (nom) ibid. 2-XLIII; 1295 Yvo (nom) HistHdVParis p. 130; 1378 Ivo (nom) hanquetvol1 1297, Yvonis (gen) ibid. 351

◑ 1260 Yvonetus (nom) ArrestReg-volI XXI, Ascension

Old French

● 1291 Yvon (obl) HistHdVParis p. 107; 1296 Yve paris1296 p. 34, Yves (nom) ibid. p. 13, Yvon (obl) ibid. p. 51; 1297 Yves (obl) HistHdVParis p. 136; 1298 Yves (obl) ibid. p. 141; 1299 Ivon (obl) ibid. p. 148, Yves (obl) ibid. p. 146; 1313 Yve Paris1313 p. 92, Yves (nom) ibid. p. 25, Yvon (obl) ibid. p. 16

◑ 1299 Ivonet (obl) HistHdVParis p. 148

Middle French

● 1392 Yves MemBret-II col. 618, Yvon ibid. col. 611; 1418 Yves DdB1418 p. 206; 1562 Yves RegPCC-1 p. 12; 1563 Yves ibid. p. 31; 1564 Yves ibid. p. 63; 1566 Yves ibid. p. 231; 1568 Yvon ibid. p. 403; 1571 Yves ibid. p. 472

◑ 1392 Yvonnet MemBret-II col. 605; 1418 Yvonnet DdB1418 p. 199, HGParis p. 375; 1421 Yvon favier 530, Yvonnet ibid. 162

Germany

Latin

● 963x1023 Juo (nom) TradCorb §228

Ireland

Latin

● fin12thC Iuo (nom) MunDocIr III, p. 15

Scotland

Latin

● 1070x1093 Ivo (abl) ESC X

Wales

Latin

● 1247 Yvone (abl) ArchCambIII p. 228