Dictionary of Medieval Names
from European Sources

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
1383 Thorstanus SRA-vol2 no. 1932, Thorsten ibid. no. 1945; 1409 Thorstens (gen) SDHK no. 17226
Cite as: R. Le Get, S.L. Uckelman. "Thorsten". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2017, no. 1. http://dmnes.org/2017/1/name/Thorsten.