Jan, from a fellow Californian just south of you!
Hopefully someone will recognize such a colorful beauty that is over 20 years old. It's very striking and you got a great close up of it too. Did you know the name in the past so that you would possibly recall it if someone comes along with some possibilities?
On the ones that stopped blooming, did you ever divide them? That would help refresh them and they may start blooming again.