Lincoln's Uncle
He lived in California before the outbreak, he's in general probably the only biological family that Lincoln doesn't despise (except for Tulip). He's a good dude. He bailed Lincoln out of jail more than once, and if Lincoln ever went to a doctor previously (he didn't, couldn't afford it), this guy is who Lincoln would have put under the 'emergency contact'. All other details are up to the writer and whatever we decide to plot out! For the PB I would like it to be someone older, who looks like they could be in their late 40's-50's.