Where does “Rubbeen” come from?

Rubbeen (Yola) comes from Middle English Robin, from Old French Robert, from Frankish berht, from Proto-Germanic berhtaz, from Proto-Germanic hrabnaz, from Proto-Indo-European ḱorh₂-, from Proto-Indo-European ḱer-, from Proto-Indo-European kr̥- — army.

Ancestry of “Rubbeen”, step by step

StepLanguageWordMeaning
1Middle EnglishRobin
2Old FrenchRoberta Germanic (Old Frankish) borrowing
3Frankishberhtbright
4Proto-Germanicberhtazbright, shining
5Proto-Germanichrabnazraven
6Proto-Indo-Europeanḱorh₂-
7Proto-Indo-Europeanḱer-to grow, to make grow, to nourish; to plait,...
8Proto-Indo-Europeankr̥-to turn, to bend
9Proto-Indo-Europeanker-army
Every word from Proto-Indo-European ker-