Where does “Gearóid” come from?

Gearóid (Irish) comes from Old French Gerart, from Frankish Gaiʀahard, from Proto-West Germanic gaiʀ, from Proto-Germanic gaizaz, from Proto-Indo-European ǵʰoysós, from Proto-Indo-European ǵʰey- — winter.

Ancestry of “Gearóid”, step by step

StepLanguageWordMeaning
1Old FrenchGerart—
2FrankishGaiʀahard—
3Proto-West Germanicgaiʀspear
4Proto-Germanicgaizazspear, pike, javelin
5Proto-Indo-Europeanǵʰoysósthrowing spear
6Proto-Indo-Europeanǵʰey-winter
Every word from Proto-Indo-European ǵʰey- →Every word from Proto-Indo-European ǵʰoysós →Every word from Proto-Germanic gaizaz →