Actually she isn't a person, she is a mountain that stands across the valley from Padre Grande; her real name is Madre Grande. There is a road - Mother Grundy Truck Trail - that roughly (very roughly, in places) skirts her on two sides, and hence the name of the area.

This website is dedicated to a personal weather station located at 2700ft and photos (almost all taken on just one property), as well as some local history and examples of other local sites.