Alfsy
  m.
  
  Old English ælf 'elf' + Old English sige 'victory'.
  
  
  
  
- England
- 
- Latin
- ● 967 Ælfsi (nom) CDAS DXXXVI,
 Ælfsige (abl) ibid. DXXXIII
 
Cite as: S.L. Uckelman. "Alfsy". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2021, no. 1. http://dmnes.org/2021/1/name/Alfsy.