Trying to untie what should be a relatively simple mystery: my paternal grandparents were first cousins according to everyone, yet no agreement how.
My grandfather Misha was born in Kapresht in 1922. His wife Genia (maiden name Krivoy) is from Ribnitsa and was born in 1920. Misha's parents were (Ilya) and Leah (maiden name Friedman).
Genia's parents were Zahar (Zalman) and Sheindel (maiden name Graberman).
Seems that somehow Iller and Sheindel were a brother and sister. Which makes the Graberman last name hard to understand. She was never known as a Beyderman.
What would be a good strategy based on your knowledge of the available records?
Gamliel (Gennadiy) Beyderman
Researching (in this case): BEYDERMAN, Kapresht. GRABERMAN, Rybnitsa.