Ubaidullah ibn Sad ibn Ibrahim ibn Sad
أبو الفضل عبيد الله بن سعد بن إبراهيم
Fourth generation, died 260 AH in Baghdad. Named in the chains of 32 narrations of the library, 4 in Bukhari, 5 in Abu Dawud, 1 in Tirmidhi.
32narrations name him
4collections
260 AHhe died, in Baghdad
In the books of narrators: Trustworthy, ثقة.