LATIN DICTIONARYLexicon Latīnum
proper noun · masculinesecond declension

Hildomundus

Hildomundus m sg (genitive Hildomundī)

Meaning

  1. Late Latinmasculinesingulara male given name from Proto-West Germanic (in a 9th C. copy of an original from the late 4th or early 5th C.)
    habes legionem tertiam Felicem et equites cataphractarios octingentos. tecum erit Hariomundus, Haldagates, Hildomundus, Charioviscus.you will have the Third Legion, the Fortunate, and eight hundred mounted cuirassiers.* You will also have with you Hariomundus, Haldagates, Hildomundus and Charioviscus.4th or 5th C., David Magie, Ph.D., transl., The Scriptores Historiae Augustae (Loeb Classical Library), volume 1, London: William Heinemann, published 1922, pages 214-215:

Origins

Borrowed from Proto-West Germanic *Hildimundu, from *hildi (“battle”) + *mundu (“hand, protection”). If the Latin form is reliable it would represent an early example of West Germanic *hildi shifting to the o-declension.

Quick answers

What does Hildomundus mean in Latin?
Hildomundus, a proper noun, means “a male given name from Proto-West Germanic (in a 9th C. copy of an original from the late 4th or early 5th C.)”.
What is the genitive of Hildomundus?
The genitive singular is Hildomundī. Hildomundus is masculine, second declension.