Jociel seems to be a Spanish male name but one I can find very little information about. If I had to guess (and I am guessing) it could be related to Jocelyn, which originated from the name of a Germanic tribe called the Gauts, also known as the Gautzelin, meaning “little Goth” made up from Gaut (Goth) and a diminutive suffix; the former is derived from a Proto-Germanic root word *gautaz (Geat) likely from Proto-Germanic *geutaną (to pour) derived from a PIE root word. The name eventually became Goscelin and Gozelin in Norman French and than Jocelyn. It’s also possible that it derives from Josse, an Old French form of Latin Iudocus which comes from Breton Judoc meaning “little lord” via Breton iudh (lord, chief, king) with the diminutive suffix -an; the name Joyce derives from it. It later became associated with the Middle English word joise meaning “to rejoice”.
But as I said, it’s just a guess on my part and I’m not entirely convinced of its etymology. Looking it up online, I saw that it was used a lot for those with Spanish backgrounds and mostly men though I’ve also found a few women with the name as well. If anyone knows anything about this name and its origin please let know.