A probable spelling variation of the Hebrew name Josiah, meaning “the Lord supports.” And you’re going to need plenty of support from wherever you can get it while you’re raising your little Jesiah – they don’t say “it takes a village” for nothing!
Jes, Jessie, Siah.
Famous people named Jesiah:
Musical artist Jesiah.
There is a character named Jesiah Black in the role-playing video game Xenogears.