yichusdik- thanks for your information. you have answered one of my own minhagim. My minhag (chasidus vishnitz) was not to fall “Korim” on R’H (only the chazzan) but to “fall korim” on yom kippur during the avodah and,of course, aleinu. In contrast, I davened in many shuls where everyone also “falls korim” on R.H.
I did not know about the ‘first” R’ pinchas Horowitz. I googled him and-wonderful technology- all your information came up there!
The “sheloh”-btw-was called Ysaiah -not pinchas, and was probably a greatgrandson.
In reference to the matteh efraim’s business life, I am not going to open this big can of (excuse me)worms on this question. The Kessef mishneh already started that long ago…and I have had my arguments on this for years…even on this website…