Jason Bourne is a guy who's trying to remember his past and figure out who he is because he suffers from amnesia. In the course of his quest he was informed that his real name is David Webb and he was born in Nixa, Missouri but he seems to totally ignore that, or at least they don't depict him trying to glean anything from this.
So I'm here to help fill in the blanks, like it or not. No spoiler warning.
"Webb" is an occupational family name meaning (in Old English) "weaver." OK, so at least the paternal branch of Jason/David's family is from the British Isles. He looks pretty Irish. Nixa, Missouri is in the Ozark Mountains. In 1717, the Ulster-Scots, aka Scots-Irish, began to move to the area which was by then mostly abandoned or otherwise depopulated by the indigenous population after a 13th century famine.