Where does “Ciliberto” come from?

Ciliberto (English) comes from Italian Ciliberto, from Italian Gilberto, from Italian Gisilbert, from Proto-Germanic Gīslaberhtaz, from Proto-Germanic gīslaz, from Proto-Germanic berhtaz, from Proto-Germanic hrabnaz, from Proto-Indo-European ḱorh₂- — army.

Ancestry of “Ciliberto”, step by step

StepLanguageWordMeaning
1ItalianCiliberto
2ItalianGilberto
3ItalianGisilbert
4Proto-GermanicGīslaberhtaz
5Proto-Germanicgīslazhostage
6Proto-Germanicberhtazbright, shining
7Proto-Germanichrabnazraven
8Proto-Indo-Europeanḱorh₂-
9Proto-Indo-Europeanḱer-to grow, to make grow, to nourish; to plait,...
10Proto-Indo-Europeankr̥-to turn, to bend
11Proto-Indo-Europeanker-army
Every word from Proto-Indo-European ker-Every word from Proto-Indo-European kr̥-Every word from Proto-Indo-European ḱer-