Stockton — If you grew up in Stockton chances are you know of Xochimilco Café.Even if you didn’t you may have heard of “Xochis,” as the locals call it.This home-style Mexican restaurant has been a downtown landmark for over 50 years. For a good portion of that span – give or take 38 years – Manuel and Graciano Leyva have served as owners.Unfortunately, Manuel, who took over the business from his older brother Salvador and a partner in 1972, passed away a few months ago. Prior to that, he could be seen at the corner booth closest to the kitchen on a regular basis.Named after a canal district just outside Mexico City, Xochimilco has somewhat maintained the same look throughout the years.