As the youngest sibling, until the Camden twins are born, Ruthie is that adorable sweetie with a full crop of curls. But, like all the others, she grows up!
Mackenzie was four when she got her first commercial and is credited for landing the role of Ruthie by shaking hands with each person at the audition.
David Gallagher (Simon Camden)
Teen Choice winner David Gallagher’s child acting career began at age 2. Before "7th Heaven" scooped him up, he was Mikey on "Look Who’s Talking Now" with John Travolta, starring as well on "Phenomenon and Summer of Fear." He’s also loved for voicing Riku in the famous gaming world, "Kingdom Hearts."
As one of the younger Camden’s, Simon is the adorable brother who begged God for a dog. His prayer is answered by the end of the first episode. Still, we know Simon becomes one of the darker characters, especially when he struggled with accidentally killing a boy in a car accident.
David Gallagher – Now
In 2007, Gallagher graduated from USC with a film and television degree. He starred in all 11 seasons of "7th Heaven" and went on to play a serial killer in "Numb3res." Keeping with infamous murder suspect characters, Gallagher appeared on "CSI: Miami, Bones," "Without a Trace," and "The Deep End" as the possible killer.
He was nominated for a Young Artist Award five times for Best Performance between 1994 and 2002. After his youngest brother was diagnosed with autism, Gallagher supports Cure Autism Now as a spokesperson.
Mackenzie Rosman – Now
She’s a big girl now. Posing for "MAXIM" in a 2013 photoshoot, she revealed a sensual side to her sweetness. But her true passion is riding her horse Mentos. Mackenzie is a competitive equestrian rider in events like show jumping.
Her real-life sister Katelyn guest-starred on "7th Heaven" in the episode about cystic fibrosis. Sadly, she died from the disease in 2008. Since then, Mackenzie has been a strong supporter of the cause.
Rachel Blanchard (Roxanne Richardson)
Rachel Blanchard is a Canadian actress who launched her career with a Mickey D’s commercial. She grew up on a Canadian show called "The Kids of Degrassi Street." In 2000, she starred on "Road Trip."
In two of the later seasons of "7th Heaven," she played officer Roxanne Richardson who leaves the show after her character is sent abroad on tour in Iraq. Lucy is relieved as Roxanne is a source of jealousy with Kevin.