My mother pronounces San Felipe as "San FILL-up-ee" and my wife insists she’s the only one in Houston who does

I pronounce it "san fell-EE-pay" though I've heard some say "san fell-EEP." My wife considers my mother's pronunciation to be so far off the mark that it's ruining her life.

Mom is from Ohio, and folks up north favor Americanized pronunciations. She says her way is old-fashioned, and accepts that it is not proper Spanish, but is/was the "historic" pronunciation favored by older generations.

Does anyone else in Houston pronounce it my mother's way?