Berthold m. Old High German beraht, Old Saxon berht 'bright' from Proto-Germanic *berhtaz + either Old High German hold 'friendly, comely, graceful' or Old High German walt 'power, authority'.

Austria

Latin

● 1237 Bertholdus (nom) hennes-vol1 96

Brabant

Latin

● 1312 Bertoldus (nom) JeanIII p. 25

Estonia

Middle Low German

● 1390 Bertold BbRT p. 339; 1399 Bertold ibid. p. 342; 1417 Bertold ibid. p. 348; 1419 Bertold ibid. p. 348; 1421 Bertold ibid. p. 349; 1427 Bertolt ibid. p. 352; 1428 Bertolt ibid. p. 352; 1432 Bertolt ibid. p. 355

France

Latin

● 1159 Bertoldus (nom) clairvaux-12thc 37

Germany

Latin

● 948 Berchetoldus (nom) quix-vol1 88; 1142 Perchtoldi (gen) mairhofer I, Perchtoldus (nom) ibid. I; 1145 Perchtoldus (nom) ibid. XIX; 1214 Bertoldus (nom) hennes-vol1 16; 1215 Bertoldi (gen) ibid. 18; 1217 Bertoldus (nom) ibid. 28; 1219 Bertholdus (nom) ibid. 37; 1220 Bertolt (nom) ibid. 48; 1221 Bertholdus (nom) ibid. 57, Bertoldus (nom) ibid. 59; 1401 Bertholdo (dat) HD1401 no. 348, Bertoldo (dat) ibid. no. 37; 1414 Berchtoldum (acc) mairhofer DCXCVIII, Berchtoldus (nom) ibid. DCXCVII; 1415 Berchtoldi (gen) ibid. DCCI, Berchtoldus (nom) ibid. DCC; 1426 Berchtoldi (gen) ibid. DCCXXIII

Early New High German

● 1400 Berchtold (nom) mairhofer DCLXVIII; 1401 Berchtold (nom) ibid. DCLXIX; 1402 Perchtold (nom) ibid. DCLXXI; 1416 Berchtold (gen) ibid. DCCIII; 1417 Berchtolden (gen) ibid. DCCV; 1418 Berchtolds (gen) ibid. DCCVII; 1419 Berchtold (nom) ibid. DCCXI, Berchtoldes (gen) ibid. DCCXIII; 1421 Berchtolden (gen) ibid. DCCXVI; 1497 Berchtold Nurn1497 193

Italy

Latin

● 1265x1339 Bertoldi (gen) BBC-Berg 126; 1326 Bertaldum (acc) Friuli-14thC no. 439, Bertaldus (nom) ibid. no. 439, Bertoldi (gen) ibid. no. 441, Pertoldi (gen) ibid. no. 446, Pertoldus (nom) ibid. no. 446

◑ 1326 Bertholoto (abl) Friuli-14thC no. 427

Switzerland

Latin

● 14thCx1478 Berthodi (gen) Ob-SPVn (193), Berthodus (nom) ibid. (194)