While looking for info whether Rav Shach (20th century Israel, Rosh Yeshivas Ponevitch) is descended from The Shach (R’ Shabsi Hakohen, 1600s), I found someone’s genealogy back to Rashi. Some interesting tidbits in there, that I had not known before:
The Rema is the son of the Trumas haDeshen, R’ Israel (b.
2) Moses Mendelssohn, 18th-century
3) A couple of years later, this tree picks up the line of the Shach – from whom, along with R’ Akiva Eger, the Barkai’s are descended (the family which assembled this genealogy).
4) The blog that Josh Waxman often remarks upon, for its odd ideas, Dreaming of Moshiach, has a story about the Shach and his “only daughter, Esther,” who is lost and raised as an orphan, later reuniting with her father. But that piece claims that the Shach’s son was Meir, while the genealogy has the Shach’s son as Moshe, while the Shach’s father was Meir.
5) On another branch of their tree, via the Maharal, I find that the Maharsha was a great-grandson of the Maharal.