Conversation so far:
what happened in 1990 to Big Boss Man (wrestler)?
In the fall of 1990, Boss Man began feuding with Bobby Heenan and The Heenan Family after Heenan continually insulted Boss Man's mother.
what did the feud consist of?
He won a series of matches against Heenan Family members in 1991

Question: what was his greatest accomplishment stated in the article?
Self-contained rewrite: what was his greatest accomplishment stated in the Big Boss Man (wrestler) article?