What was the name of the youngest girl on the Brady Bunch?

The Brady Bunch is an American sitcom created by Sherwood Schwartz that aired from September 26, 1969, to March 8, 1974, on ABC. The series revolves around a large blended family with six children. Considered one of the last of the old-style family sitcoms, the series aired for five seasons and, after its cancellation in 1974, went into syndication in September 1975. While the series was never a critical success or hit series during its original run, it has since become a popular staple in syndication, especially among children and teenaged viewers.

Cynthia "Cindy" Brady - née Cynthia Martin, portrayed by Susan Olsen in the TV show, The Brady Bunch Hour, The Brady Girls Get Married and The Bradys, Jennifer Runyon in A Very Brady Christmas, Olivia Hack in the theatrical films and Sofia Vassilieva in the 2002 TV movie, is the youngest Brady daughter.