Donkey Kong/WMG

Like how Cranky Kong was the original Donkey Kong, The original Mario (or "Jumpman") is Mario's father
And Pauline is Mario's Mother

Mario was Brainwashed by a younger King K. Rool in Donkey Kong Jr.
It's possible.

Pauline helped orchestrate Donkey Kong's escape in Donkey Kong Jr.
In the arcade version of Donkey Kong Jr., Jr. uses Pauline's parasol to get to Mario's hideout. How did he get it? Simple, Pauline gave it to him. Why? Either Pauline felt that Mario's treatment of Donkey Kong was improper, or Mario was so busy guarding him that he wasn't spending anytime with her.