Dictionary of Medieval Names
from European Sources

Adalger m. Old English æþel, Old High German adal 'noble' + Old English gār, Old High German, Old Saxon gēr 'spear'.

Cf. Adalgaria. Alger can also be a variant of Algar. The German vernacular form Adilger is witnessed between 1074 and 1087 in the place name Adelgerispach (UrkStyr 77) and Adalger is witnessed c1075 in the place name Adalgerispach (UrkStyr 78).

England
Latin
966 Æðelgarus (nom) CDAS DXXVIII; 967 Æðelgar (nom) ibid. DXXXIII
France
Latin
699 Adalgarius (nom) DCEL-2 Add. X; c823 Adalgarius (nom) irminon-vol2 105, Palatiolum; 862x876 Adalgari (gen) InsMacon X; 1016 Adalger (nom) HGSav-4.1 p. 3; 1066 Augerius (nom) StVdM-II 698; 1096 Aalgerii (gen) St-Bernard-Romans 138; 1098 Augerii (gen) StVdM-II 697; 1179 Algerus (nom) clairvaux-12thc 176; 1310 Augerius (nom) GasReg-A p. 217; 12831286 Augerii (gen) ibid. p. 227
Germany
Latin
822x875 Adalgerus (nom) TradCorb §40, Adilger (nom) ibid. §39; 890 Adalgarium (acc) HambUrk-vol1 XXIII; 891 Adalgario (dat) ibid. XXIV; 895 Adalgario (dat) ibid. XXV; 905 Adalgario (abl) ibid. XXVI; 1043 Adelgerus (nom) UrkStyria 54
Ireland
Latin
fin12thC Augerus (nom) MunDocIr III, p. 12
Cite as: S.L. Uckelman. "Adalger". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2017, no. 1. http://dmnes.org/2017/1/name/Adalger.