The German vernacular form Dyetmar is witnessed between 1074 and 1087 in the place name Dyetmarsdorf (UrkStyr 77).

Austria

Latin

● 898 Theotmari (gen) UrkStyria 12; 927 Diotmar (nom) ibid. 17; 928 Diotmar (nom) ibid. 18; 930 Diotmar (nom) ibid. 19; 935 Diotmari (gen) ibid. 21; c1030 Tietmari (gen) ibid. 46; 1074x1087 Dietmar (nom) ibid. 77, Dietmarus (nom) ibid. 77; c1075 Dietmar (nom) ibid. 78, Dietmari (gen) ibid. 78; c1100 Dietmar (nom) ibid. 89; c12thC Dietmar (nom) GCSStFl p. 193; 1103 Diethmar (nom) UrkStyria 95; c1120 Dietmar (nom) ibid. 105; c1128 Dietmar (nom) ibid. 120; c1130 Dietimarus (nom) ibid. 122a; 1231 Dietmari (gen) UBEnns3 I

◑ c1100 Tiemone (abl) UrkStyria 93, Tyemo (nom) ibid. 91; c1120 Diemo (nom) ibid. 108

Czech Republic

Latin

● 1358 Dyethmari (gen) chlumecky 272, p. 32; 1388 Ditmarus (nom) LDFPUP1 p. 15; 1405 Ditmarum (acc) ibid. p. 21

◑ 1358 Tyemyco (nom) chlumecky 203, p. 30; 1360 Tyma (abl) ibid. 467, p. 40

Middle High German

● 1318 Dytmars (gen) Rössler1 45

Denmark

Latin

◑ 1362 Tymmes (gen) MIRGPCM4 XVI-V

Estonia

Middle Low German

● 1364 Dethmar BbRT p. 334; 1414 Dethmar ibid. p. 347; 1420 Dethmar ibid. p. 349

◑ 1428 Tymme BbRT p. 352; 1432 Tymme ibid. p. 356

France

Latin

● c823 Teutmarus (nom) irminon-vol2 9, CE

Germany

Latin

● 822x875 Thiadmaro (abl) TradCorb §156, Thiadmarus (nom) ibid. §164, Thiatmaro (abl) ibid. §219, Thiatmarus (nom) ibid. §40, Tiadmaro (abl) ibid. §149, Tiadmarus (nom) ibid. §126; 888 Theotmari (gen) HambUrk-vol1 XXII; 891 Theothmari (gen) UrkStyria 10; 904 Theotmari (gen) ibid. 13; 925 Diotmar (nom) ibid. 14; c925 Diotmar (nom) ibid. 15; 1036 Tietmari (gen) ibid. 49, Tietmarus (nom) ibid. 49; 1130 Thietmarus (nom) ibid. 121; 1145 Dietmar (nom) mairhofer XIX; 1149 Diethmar (nom) ibid. XXXII; 1210 Dietmari (gen) hennes-vol1 10, Thietmaro (abl) CDL-1.1.1 IV; 1211 Dietmarus (nom) hennes-vol1 11; 1232 Thetmari (gen) UrkMeck1 no. XVIII, Thetmaro (dat) ibid. no. XVIII; 1255 Dymari (gen) hennes-vol1 157; 1259 Tetmarus (nom) CDL-1.1.1 XXXI; 1278 Ditmaro (dat) hennes-vol1 264; 1303 Thetmarum (acc) BremUrk2 no. 28, Thimaro (dat) ibid. no. 27, Thitmarum (acc) ibid. no. 27; 1322 Dietmari (gen) SMM p. 158; 1342 Dethmarus (nom) UrkHan 6; 1401 dyetmaro (dat) HD1401 no. 17

◑ 1147 Tieme (nom) mairhofer XXVII; 1238 Timmo (nom) CDL-1.1.1 XVII; 1242 Thimmo (nom) UrkMeck1 no. XXXI

Latvia

Latin

● 1292 Tetmarus (nom) RigSB 658; 1296 Tethmaro (dat) ibid. 255; 1298 Tethmari (gen) ibid. 829; 1302 Dethmaro (dat) ibid. 197; 1303 Detmarus (nom) ibid. 373; 1304 Dethmaro (dat) ibid. 919, Detmaro (dat) ibid. 913

◑ 1288 Timmoni (dat) RigSB 528; 1291 Timmoni (dat) ibid. 392; 1299 Thinnoni (dat) ibid. 367; 1300 Thimmoni (dat) ibid. 415, Timmoni (dat) ibid. 422; 1301 Timmoni (dat) ibid. 857

The Netherlands

Latin

● 855 Thiadmar (nom) OrkGZ no. 45

Poland

Middle High German

● 1336 Ditmars (gen) SBGlatzer p. 4

Sweden

Old Swedish

● 1415 Dettmars (gen) SDHK no. 18466