Where does “Ruggero” come from?

Ruggero (Italian) comes from Old French Rogier, from Latin rogerius, from Frankish Hrōthigeir, from Proto-Germanic Hrōþigaizaz, from Proto-Germanic gaizaz, from Proto-Indo-European ǵʰoysós, from Proto-Indo-European ǵʰey- — winter.

Ancestry of “Ruggero”, step by step

StepLanguageWordMeaning
1Old FrenchRogierfrom Old Frankish
2Latinrogerius
3FrankishHrōthigeir
4Proto-GermanicHrōþigaizazfame-spear
5Proto-Germanicgaizazspear, pike, javelin
6Proto-Indo-Europeanǵʰoysósthrowing spear
7Proto-Indo-Europeanǵʰey-winter

Words derived from “Ruggero

Every word from Proto-Indo-European ǵʰey-Every word from Proto-Indo-European ǵʰoysósEvery word from Proto-Germanic gaizaz