Robert was known as "Blackjack Mulligan" in the wrestling world and along with "Blackjack Lanza" and manager Bobby Heenan they dominated the tag team wrestling scene for many years all over the United States.
Mulligan was 73 and the cause of death has not been released as of yet, but it is known he has been having health problems for the last couple of years.
Anyone who grew up in the 60's, 70's or 80's and was a wrestling fan knew who Mulligan was. His two sons took after him in the wrestling business Kendall Windham and Barry Windham.
Another of the legends has passed.