Where does “Jayce” come from?

Jayce (English) comes from English Jace, from English Jason, from English James, from Middle English James, from Old French jamés, from Latin iam, from Proto-Indo-European Hyā́m.

Ancestry of “Jayce”, step by step

Jayce traces back through two separate lines of ancestry.

via English Jace

StepLanguageWordMeaning
1EnglishJace
2EnglishJasonThe leader of the Argonauts, who retrieved the Golden Fleece from king Aeetes of Colchis, for his uncle Pelias
3EnglishJamesThe twentieth book of the New Testament of the Bible, the general epistle of James
4Middle EnglishJamesJames the Greater or James the Less apostles
5Old Frenchjamésever; never
6Latiniamalready; now; anymore
7Proto-Indo-EuropeanHyā́m

via English Jase

StepLanguageWordMeaning
1EnglishJase
Every word from Proto-Indo-European Hyā́mEvery word from Latin iamEvery word from Old French jamés