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Dictionary of Medieval Names
from European Sources

Ernest m. Old High German ernust 'serious, severe, grave, ernest'.

Austria
Latin
927 Ernust (nom) UrkStyria 17; c1050 Ernusti (gen) ibid. 57; c1066 Hernust (nom) ibid. 68; c1070 Ernost (nom) ibid. 71; 1074x1087 Ernst (nom) ibid. 77; c1075 Ernust (nom) ibid. 78, Ernustis (gen) ibid. 78; c1120 Ernest (nom) ibid. 108, Ernist (nom) ibid. 106
Czech Republic
Latin
1345 Arnestus (nom) CDEM-7.2 606
Estonia
Middle Low German
1440 Ernst BbRT p. 362
Germany
Latin
855 Ernst (nom) FRA-XXXL 14, Ernsto (dat) ibid. 14; 904 Ernustus (nom) UrkStyria 13; 1142 Ernist (nom) mairhofer VIII; 1218 Ernestus (nom) hennes-vol1 35; 1221 Ernestus (nom) ibid. 57; 1401 Ernesto (dat) HD1401 no. 253
Early New High German
1419 Ernst (nom) mairhofer DCCIX; 1426 Ernst (nom) ibid. DCCXXIV
Italy
Latin
1096 Ernest (nom) UrkStyria 88
Cite as: S.L. Uckelman. "Ernest". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2017, no. 1. http://dmnes.org/2017/1/name/Ernest.