This is pretty neat: Palo Alto Online has historical notes on many neighborhoods on the southern SF peninsula. For example, Castro City in Mountain View, or Loyola Corners in Los Altos, or Fair Oaks in Menlo Park.
Of course, my own house isn’t in a historical neighborhood. We’re newfangled sorts around hereabouts, I guess.
It’s strange that the former town of Mayfield hardly rates a mention. Mayfield used lie between Mountain View and Palo Alto, and it eventually was absorbed by the two other cities when it was outgrown by them. The southern half of Palo Alto was mostly Mayfield, and I believe California Avenue was Mayfield’s downtown, which is why Palo Alto effectively has two downtown districts. The now-defunct Mayfield Mall at the north end of Mountain View was named for it, and is the only location I know of which still bears the Mayfield name (though there may be others I just don’t know about).