Dwayne Johnson aka "The Rock" is the son of former pro wrestler "Soulman" Rocky Johnson. We always hear Dwayne talk about his mother, whose father was legendary Samoan pro wrestler High Chief Peter Maivia. In fact, when Dwayne first appeared on WWE television, he was billed as "Rocky Maivia." That sucked, and he morphed into The Rock. Well, it was Soulman's birthday, and his son wrote a little about him on Instagram.