Spellings in Ou- are typical of southern France.

Estonia

Middle Low German

● 1383 Oderd BbRT p. 336; 1424 Odert ibid. p. 350

France

Latin

● 1147 Odardo (abl) CartNDdOurscamp XCVII; 1258 Odardum (acc) ArrestReg-volI XXXVII, pluribus, Odardus (nom) ibid. XVIII, pluribus; 1275 Oudardi (gen) CartNDdOurscamp XLIV; 1378 Oudardi (gen) hanquetvol1 589

◑ 1138x1162 Oudelini (gen) clairvaux-12thc 88; 1378 Odino (dat) hanquetvol1 1304

Old French

● 1292 Oudart (obl) HistHdVParis p. 110, MemBret-I 1102; 1293 Oudart (obl) HistHdVParis p. 123; 1296 Odart paris1296 p. 27, Oudart ibid. p. 8; 1301 Oudart (obl) MemPic-vol17 p. 282; 1313 Hodart Paris1313 p. 91, Oudart ibid. p. 5

◑ 1296 Oudin paris1296 p. 9, Oudinet ibid. p. 42

Middle French

● 1388 Oudart thierry; 1392 Hodouart MemBret-II col. 608, Oudart ibid. col. 616; 1404 Oudart HistHdVParis no. 4; 1415[1469x1471] Oudart Waurin p. 225; 1418 Oudart HGParis p. 376; 1423 Oudart favier 417; 1438 Oudart ibid. 400; 1528 Odart Subsidy1528 p. 171; 1563 Ouldard RegPCC-1 p. 36; 1564 Ouldard ibid. p. 49; 1565 Oudard ibid. p. 153; 1587 Odart RTFProvins 287

◑ 1421 Oudin favier, Oudinet ibid. 422; 1423 Oudin ibid. 346, Oudinet ibid. 96; 1438 Oudin ibid.

Italy

Latin

● 1376 Odoardo (abl) DouGen1 p. 22; 1464 Odoardus (nom) CUP-III-I CCXXXI

Scotland

Latin

● c1120 Odardo (abl) ESC XXXV