Norman - What you refer to as Bischoff might be Bykhov, Belarus, which has many different spellings. It is in the Mogilev Region.  My grandmother, Sarah ERLIN, was born in Bykhov — Staryy (Old) Bykhov is how she referred to it. Her brother Aaron married Chana Reiza PLOTKIN. They immigrated to America and settled in Buffalo, NY. Other PLOTKIN family members settled in Canada.

See JewishGen’s Communities Database and Gazetteer and search for Bykhov: https://www.jewishgen.org/Communities/

See also: https://www.jewishvirtuallibrary.org/bykhov

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Nancy Siegel
San Francisco, CA
siegel.nancy99@...