Any Grandsons, great grandsons (or granddaugthers) of great fighters. in combatsports

I was thinking.....we hear about the sons of great fighters sometimes being boxers...but you would think you would sometimes hear of a guy who's granddad, or great granddad, or great great...was a great fighter.

The reason I ask this is awhile back i was watching mma (yeah i know) and some fighter was fighting who great grandfather was Jim Jeffries (he had a wrestling base however, which wasnt even that great..and his standup/boxing sucked, and he lost..it was on strikeforce).


anyhow, can anyone think of anyone like that....decedents of Sullivan, or Dempsey, or some of the ligther weight guys?