Bob Orton Jr. actually teamed more with his own father, mostly in Florida around 1976. Wrestlingdata.com has about 100 matches with the two.
Gino and Leo Garibaldi are probably the most notable. Famous wrestling family of the golden era of wrestling. Gino was a veteran, Leo ended up becoming the owner/booker of Los Angeles wrestling. Gino's brother Chick died after a match with Bruno Sammartino at Madison Square Garden.
Larry O'Dea teaming with his son looks like a one shot deal. Jeff O'Dea never did much else in wrestling. Larry was known for teaming with Ron Miller as the Australians, famous around the 1970s.
Not digging in too deep, but I imagine there are quite a few father/son duos in Mexico, where tag wrestling is frequent and old wrestlers tend to stick around a long time.