Abd ar-Rahman ibn Abdullah
أبو محمد عبد الرحمن بن عبد الله بن سعد
Fourth generation, died 210 AH. Named in the chains of 11 narrations of the library, 2 in Abu Dawud, 5 in Tirmidhi, 3 in Nasa'i.
11narrations name him
4collections
210 AHhe died
In the books of narrators: Trustworthy, ثقة.