Dictionary of Medieval Names
from European Sources

Leif m. A pet form of any of various names beginning with Gothic laiba, Old High German leitha, Old Icelandic leif 'relic, souvenir; inheritor' or this element used as a standalone name.

France
Latin
1052 Laibonis (gen) St-Bernard-Romans no. 85
Cite as: S.L. Uckelman. "Leif". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2017, no. 1. http://dmnes.org/2017/1/name/Leif.