Thanks, everyone
After doing some research, I think my " childhood" irises may be any or all of these: Ramses, Caprice, Quaker Lady, Pallida Dalmatica, Plumeri,
The iris in my current garden that a couple of people have identified as Indian Chief is definitely more purple than most photos I've seen of Ind. Chief, but it has a similar form. I don't think my white iris is Albicans. It's falls and beard are too ruffled, it seems to me. But it is very, very pure white with only a yellow throat.
I'll be more observant next year!