“The facility was named after Toribio Tanforan, the grandson-in-law of Jose Antonio Sanchez, the grantee of the Rancho Buri Buri Mexican land grant.” — Wikipedia
Thanks, I didn't know that. I live in the Buri Buri neighborhood in SSF, and know that the Rancho Buri Buri extended pretty much all the way down the peninsula from SF before being subdivided within the time it became USA land.