What I did know was that he was the drummer in The Mothers of Invention and he didn't do too much of note after Zappa disbanded the group after a few of the freakiestrecords that anyone had heard up to that point (which was 1969).
And every time I popped in "We're Only In It for the Money" I'd hear him say, "Hi, boys and girls. I'm Jimmy Carl Black and I'm the Indian of the group." Which was kinda funny, although I'm not really sure why.
It really sucks for some people after they get booted out of famous bands. Millions of people hear your playing and you get bupkis for it. The Ms of I were on salary and Frank wrote all of the songs so he kept all of the royalties. Apparently the guy even worked in a doughnut shop for a while. Oh, the humanity.
But he seemed like a decent guy who had a sense of humor about himself. And there just aren't enough Indians in rock music anymore. Or ever.