Question: When did Avrohom Yaakov Friedman (First Sadigura Rebbe)'s father die?
Sentence (from "Yisrael Friedman of Ruzhin"): Israel Friedman of Ruzhyn  (5 October 1796 – 9 October 1850), also called Israel Ruzhin, was a Hasidic "rebbe" in 19th-century Ukraine and Austria.
Relevant evidence: Yes