[IG_Semmelweiss]

No. However there is a relation.

Ali's grandfather specifically named his son after Cassius to honor Cassius, the KY politician. The son proceeded to do the same, with who would eventually be a famous boxer, M. Ali.

The boxer changed his name to Ali, both due to his conversion to islam , and because he was angry to take the name of a plantation owner.

The latter is true - Cassius was a plantation owner. However, early on he defender ardently emancipation. He in fact suffered multiple murder attempts from actual slavery advocates... who surrounded him in KY