Where does “Ilbert” come from?

Ilbert (English) comes from English Hilbert, from Middle English Hilbert, from Old English hild, from Proto-West Germanic hildi, from Proto-Germanic hildiz — battle, fight.

Ancestry of “Ilbert”, step by step

StepLanguageWordMeaning
1EnglishHilbert—
2Middle EnglishHilbert—
3Old Englishhildbattle, war
4Proto-West Germanichildibattle, fight
5Proto-Germanichildizbattle, fight
Every word from Proto-Germanic hildiz →Every word from Proto-West Germanic hildi →Every word from Old English hild →