Jan and Philip Covington and their daughter Patty

On The Bradys, the short lived 1990 series reboot, Jan and Philip adopted Patty

Eve Plumb, Ron Kuhlman, Valerie Ick

Robbie Rist on Twitter 2019

I assume HGTV asked him to do a drive by like Jerry Houser, Ron Kuhlman, and others members of the extended Brady family did on "A Very Brady Renovation"

A Very Brady Christmas