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
 
- Poland
- 
- Middle High German
- ● 1336 Ditmars (gen) SBGlatzer p. 4
 
- Sweden
- 
- Old Swedish
- ● 1415 Dettmars (gen) SDHK no. 18466
 
Cite as: S.L. Uckelman. "Theodemar". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2019, no. 1. http://dmnes.org/2019/1/name/Theodemar.