Thorsten m. Old Icelandic Þórr, the name of the god of thunder, deriving from Proto-Germanic *þunraz 'thunder' + Old Icelandic steinn 'stone', from Proto-Norse ᛊᛏᚨᛁᚾᚨᛉ (stainaz), from Proto-Germanic *stainaz.

England

Latin

● c1132 Turstinus (nom) MemStMF II-I; 1185x1186 Turstini (gen) PR-XXXVI p. 11; 1189 Turstanus (nom) GASurv p. 106, Turstini (gen) ibid. p. 208, Turstino (dat) ibid. p. 96, Turstinus (nom) ibid. p. 78; 1222 Turstanus (nom) StPaulDom p. 21, turstani (gen) ibid. p. 27

Early Modern English

● 1530 Tostyne LIWill-III p. 88; 1577 Thurstan StAnthonlin p. 25

Estonia

Middle Low German

◑ 1592 Twyste Tiik1977 p. 288

France

Latin

● 1015 Turstingi (gen) NTDip-vol4 p. 225; c1175–1180 Tustinus (nom) ChartCaen2 p. 63; 1180 Tustino (abl) RotScaNor p. 2

Old French

● 1313 Toutain Paris1313 p. 105

Iceland

Middle Icelandic

● 1500 þorsteins (gen) DipIs-7 489

Ireland

Latin

● fin12thC Torsten (nom) MunDocIr III, p. 6, Turstein (gen) ibid. III, p. 9, Turstin (nom) ibid. III, p. 8, Turstini (gen) ibid. III, p. 21, Turstinus (nom) ibid. III, p. 19

Norway

Middle Norwegian

● 1432x1433 thorstein ABJ p. 10

Scotland

Latin

● 1122 Thurstini (gen) ESC XLV, Thurstino (dat) ibid. XLIV, Turstini (gen) ibid. XLIII

Sweden

Latin

● 1350 Thorstani (gen) SDHK no. 6021, Thorstanus (nom) ibid. no. 6002, Thorstens (gen) ibid. no. 6023

Old Swedish

● 1376 Thorstin (nom) SDHK no. 10824; 1383 Thorstanus SRA-vol2 no. 1932, Thorsten ibid. no. 1945; 1407 Thorstens (gen) SDHK no. 16943; 1409 Thorstens (gen) ibid. no. 17226; 1410 Thorsten (nom) ibid. no. 17485