Dictionary of Medieval Names
from European Sources

Frodo m. Old Frisian, Old Saxon frōd, Old High German fruot, Old Icelandic fróðr 'wise'.

The name of a number legendary Danish kings.

France
Latin
1018x1032 Frodo (nom) StVdM-II 666; c1020 Frodone (abl) ibid. 670; 1029x1033 Frodo (nom) CartStPC XII; 1030 Frotone (abl) StVdM-II 678; 1055 Frodonis (gen) ibid. 680
c823 Frodinus (nom) irminon-vol2 37, Palatiolum
Cite as: S.L. Uckelman. "Frodo". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2017, no. 1. http://dmnes.org/2017/1/name/Frodo.