True Spanish Flamenco is not gypsy in origin.
It is a folk art, as you say extensively practiced by Andalucians, and owes little to gypsy folk music.
There are good examples of the flamenco-verdiales of Murcia on youtube, and probably good Andalusian but I don't have time to sort through all the "gypsy" candy.
A fine group from Murcia was included as a photoblog, surprisingly on MSNBC. Scroll down to the youtube excerpt:
http://photoblog.msnbc.msn.com/_news/2010/12/28/5726080-spanish-villagers-perform-traditional-flamenco-music-in-their-local-festival