Question: were there two jans on the brady bunch

Answer: No, Jan Brady - née Jan Martin, later Jan Brady-Covington (center left) was portrayed by Eve Plumb in the TV series, The Brady Girls Get Married, The Brady Brides, A Very Brady Christmas and The Bradys. Since Plumb was unable to return at the time, Geri Reischl replaced her in The Brady Bunch Hour. Jennifer Elise Cox portrayed the character in the two theatrical films, and Ashley Drane in the TV movie.