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Dictionary of Medieval Names
from European Sources
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Otto m. Old High German ōt, Old Saxon ōd 'wealth, riches'.

The name of four Holy Roman Emperors, a Frankish king, and a number of saints, as well as the baptismal name of a 14th C pope.

The forms Otto and Otho are preferred in Germany, with Odo being more common in France.

Austria
Latin
● 1237 Otto (nom) hennes-vol1 96
Brabant
Latin
● 1312 Ottho (nom) JeanIII p. 25, Otto (nom) ibid. p. 28
Czech Republic
Latin
● 1349 Ottoni (dat) chlumecky 36; 1353 Ottoni (dat) ibid. 97; 1356 Otto (nom) ibid. 130
◑ 1351 Otycone (abl) chlumecky 52
England
Latin
● 1189 Odo (nom) GASurv p. 151, Odonis (gen) ibid. p. 145
Estonia
Middle Low German
● 1431 Otte BbRT p. 355
◑ 1385 Otke BbRT p. 338; 1386 Otke ibid. p. 338; 1406 Otke ibid. p. 344; 1433 Otke ibid. p. 356; 1434 Otke ibid. p. 357; 1436 Otke ibid. p. 358; 1592 Ottste Tiik1977 p. 287
France
Latin
● 699 Otto (nom) DCEL-2 Add. X; 937x93 Odon (acc) St-Bernard-Romans no. 99, Odoni (gen) ibid. no. 80; 1067 Odo (nom) CartNDSaintes XII, Odonis (gen) ibid. XII; 1079x1081 Odo (nom) ibid. XXI, Oto (nom) ibid. XXI; 1079x1101 Odo (nom) CartStPC IX; 1082x1087 Odo (nom) St-Bernard-Romans no. 120; 1101x1129 Odo (nom) CartStPC XXII, Odone (abl) ibid. XXVIII; a1108 Odo (nom) ibid. XXI; a1116 Odo (nom) ibid. XX, Odonis (gen) ibid. XX; 1123 Odonis (gen) CartNDJosaphat XII; 1130 Udone (abl) CartStPC VIII; 1135 Odo (nom) clairvaux-12thc 7, Odone (abl) ibid. 7, Oto (nom) ibid. 7; 1138x62 Odo (nom) ibid. 66, Odonis (gen) ibid. 66; c1140 Odo (nom) CartNDdOurscamp LXXXIII; 1143x1146 Odo (nom) clairvaux-12thc 12; 1146 Odo (nom) CartNDSaintes VIII; 1147 Hoto (nom) clairvaux-12thc 15, Odo (nom) ibid. 14, Odone (abl) ibid. 14; c1147 Odonis (gen) CartNDdOurscamp LXII; 1147 Odonis (gen) clairvaux-12thc 17; 1147x1162 Odo (nom) ibid. 44; 1151 Odo (nom) ibid. 23; 1153 Odo (nom) CartNDSaintes IX; 1154 Odo (nom) CartNDdOurscamp LIV, clairvaux-12thc 27; c1156 Odonis (gen) CartNDdOurscamp XXXII; 1159 Odo (nom) StVdM-II 736; 1160 Odonis (gen) CartNDdOurscamp CXIV; c1160 Odonis (gen) ibid. XVI; 1162 Odonis (gen) clairvaux-12thc 39; 1163 Oddo (nom) ibid. 94, Odo (nom) ibid. 99, Odonis (gen) ibid. 99; 1163–64 Odo (nom) ibid. 106, Odonis (gen) ibid. 106; 1164 Odo (nom) ibid. 120, Odonis (gen) ibid. 120; 1174 Odo (nom) CartNDdOurscamp CXX, Odone (abl) ibid. CXX, Odonis (gen) ibid. CXX; 1180 Eudone (abl) RotScaNor p. 29, Odone (abl) CartNDdOurscamp LV, RotScaNor p. 3, Odonis (gen) ibid. p. 14, Otonis (gen) ibid. p. 1; 1183 Odone (abl) CartNDdOurscamp LVI; 1187 Odonis (gen) ibid. LVII; 1190 Odo (nom) ibid. CIII; 1196 Odo (nom) ibid. CXXXIX; 1201 Odo (nom) ibid. LXI; 1206 Odo (nom) ibid. XIV; 1209 Odonis (gen) ibid. LII; 1214 Odonis (gen) ibid. CXLI; 1217 Odo (nom) ibid. XXXI, Odonis (gen) ibid. XXXI; 1227 Odone (abl) ibid. XLV; 1238 Odonis (gen) ibid. CXXX; 1255 Odo (nom) ArrestReg-volI IX, Candlemas; 1257 Eudo (nom) ibid. IV, St. Martin, Odone (abl) ibid. XV, BMV; 1258 Odo (nom) ibid. XXIX, Candlemas; 1259 Odonem (acc) ibid. II, BMV, Odonis (gen) ibid. XIII, St. Martin; 1260 Odo (nom) ibid. VI, Candlemas; 1283–86 Otho (nom) GasReg-A; 1287 Otho (nom) ibid.; 1301 Odonis (gen) MemPic-vol17 p. 258; 1310/11 Otho (nom) GasReg-A; 1310 Otho (nom) ibid.; 1313 Odonem (acc) CartNDdOurscamp LXXXVIII; 1378 Odo (nom) hanquetvol1 581
◑ 1147 Odelini (gen) clairvaux-12thc 14; 1260 Odinus (nom) ArrestReg-volI XII, Candlemas
Old French
● 1296 Eude paris1296 p. 27, Heude ibid. p. 14; 1313 Eude Paris1313 p. 18, Eudes ibid. p. 16, Heude ibid. p. 24, Œude ibid. p. 15
◑ 1133 Eudon (obl) tailliar no. 1; 1313 Eudelot Paris1313 p. 57, Houdet ibid. p. 3
Germany
Latin
● 822x875 Hodo (nom) TradCorb §4, Oddo (abl) ibid. §123, Oddone (abl) ibid. §97; 937 Otto (nom) HambUrk-vol1 XXXI, Ottoni (dat) ibid. XXXII, Ottonis (gen) ibid. XXXI; 941 Otto (nom) quix-vol1 11, Ottonis (gen) ibid. 11; 947 Otto (nom) ibid. 12, Ottonis (gen) ibid. 12; 948 Ottho (nom) ibid. 88, Otthone (abl) ibid. 88, Otthonis (gen) ibid. 88; 965 Otto (nom) HambUrk-vol1 XLI, Ottonis (gen) ibid. XLI; 966 Otto (nom) ibid. XLIII, quix-vol1 13, Ottonis (gen) HambUrk-vol1 XLIII, quix-vol1 13; 967 Otto (nom) HambUrk-vol1 XLIV, Ottonis (gen) ibid. XLIV; 972 Otto (nom) quix-vol1 15, Ottonis (gen) ibid. 15; 974 Ottho (nom) ibid. 89, Otthonis (gen) ibid. 89, Otto HambUrk-vol1 XLV, Ottonis (gen) ibid. XLV; 983 Otto (nom) ibid. XLVI, Ottonis (gen) ibid. XLVI; 985 Ottho (nom) quix-vol1 90, Otthonis (gen) ibid. 90; 988 Otto (nom) HambUrk-vol1 XLIX, Ottonem (acc) ibid. LI, Ottonis (gen) ibid. XLIX; 997 Ottho (nom) quix-vol1 91, Otthoni (dat) ibid. 49, Otthonis (gen) ibid. 91, Otto (nom) ibid. 16, Ottonis (gen) ibid. 16; 998 Otto (nom) ibid. 17, Ottonis (gen) ibid. 17; 1000 Otto (nom) ibid. 19, Ottonis (gen) ibid. 19; 1001 Otto (nom) HambUrk-vol1 LIV, Ottonis (gen) ibid. LIV; 1003 Ottonis (gen) ibid. LVI; 1009 Oddo (nom) ibid. LVIII, Oddonem (acc) ibid. LVIII; 1061 Vdo (nom) quix-vol1 60, Vdone (abl) ibid. 60; 1064 Vdo (nom) ibid. 92; 1112 Ottonis (gen) ibid. 26; 1134 Otto (nom) ibid. 97; 1136 Otto (nom) ibid. 98, Udo (nom) ibid. 98; 1138 Vdo (nom) ibid. 28; 1142 Ottonis (gen) mairhofer VII; 1147 Ottonis (gen) quix-vol1 29; 1151 Otto (nom) mairhofer XXXVI; 1165 Ottonis (gen) quix-vol1 31; 1194 Otto (nom) ibid. 54; 1207 Otto (nom) hennes-vol1 8; 1210 Otto (abl) ibid. 10; 1211 Ottone (abl) ibid. 11; 1212 Otto (nom) ibid. 12, Ottone (abl) quix-vol1 103; 1213 Otto (nom) hennes-vol1 14; 1214 Otto (nom) ibid. 15; 1216 Oddo (nom) ibid. 20, Otto (nom) ibid. 24; 1217 Otto (nom) ibid. 28; 1219 Otto (nom) ibid. 39, Vdonis (gen) quix-vol1 73; 1220 Otto (nom) hennes-vol1 44; 1222 Otto (nom) quix-vol1 74; 1234 Otto (nom) hennes-vol1 89; 1240 Otto (nom) ibid. 104; 1249 Otto (nom) ibid. 134; 1250 Otto (nom) ibid. 138, Ottonis (gen) ibid. 138; 1251 Otto (nom) ibid. 142; 1253 Otto (nom) ibid. 145; 1401 Ottoni (dat) HD1401 no. 7, ottonis (gen) ibid. no. 128
Early New High German
● 1429 Ottens (gen) mairhofer DCCXXXII; 1497 Ott Nurn1497 338
Italy
Latin
● 1224 Otto (nom) hennes-vol1 65; 1245 Otto (nom) ibid. 120
◑ 1265x1339 Utulini (gen) BBC-Berg 134; 1285 Octonelli (gen) Perugia1285 p. 158; 1326 Ottolino (abl) Friuli-14thC no. 422, Ottolinus (nom) ibid. no. 422
Latvia
Latin
● 1288 Ottoni (dat) RigSB 388; 1289 Otto (nom) ibid. 135, Ottoni (dat) ibid. 339; 1290 Otto (nom) ibid. 137; 1293 Otto (nom) ibid. 163; 1294 Otthoni (dat) ibid. 170; 1296 Ottoni (dat) ibid. 68; 1299 Ottonis (gen) ibid. 277
Middle Low German
● 1462 Otte Arbusow p. 99
The Netherlands
Latin
● 1235 Otto (nom) hennes-vol1 93; 1243 Otto (nom) ibid. 112
Scotland
Latin
● 1214–1226 Odonis (gen) morton-vol1 1
Sweden
Old Swedish
● 1383 Vd (gen) SRA-vol2 no. 1919
Cite as: R. Le Get, S.L. Uckelman. "Otto". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2015, no. 2. http://dmnes.org/2015/2/name/Otto.