О, это вообще большаааая тема )) с многими легендами ))) примерно вот так: https://detaly.co.il/kak-russkie-evrei-poluchili-familii/#:~:text=%D0%9A%D0%BE%D0%B3%D0%B4%D0%B0%20%D0%B5%D0%B2%D1%80%D0%B5%D1%8F%D0%BC%20%D0%BF%D1%80%D0%B5%D0%B4%D0%BE%D1%81%D1%82%D0%B0%D0%B2%D0%BB%D1%8F%D0%BB%D0%BE%D1%81%D1%8C%20%D0%BF%D1%80%D0%B0%D0%B2%D0%BE%20%D1%81%D0%B0%D0%BC%D0%BE%D1%81%D1%82%D0%BE%D1%8F%D1%82%D0%B5%D0%BB%D1%8C%D0%BD%D0%BE,%D0%A6%D0%B0%D0%B4%D0%B8%D0%BA%20%E2%80%93%20%C2%AB%D0%BF%D1%80%D0%B0%D0%B2%D0%B5%D0%B4%D0%BD%D0%B8%D0%BA%C2%BB).