Complex sentence: Her paternal grandparents Edgar Barrier and Ernestine Barrier were both film actors and Broadway performers; her father, Michael Barrier, was also an actor, and her mother danced with the Lester Horton Dancers.
Split into simpler sentences: Her paternal grandparents Edgar Barrier and Ernestine Barrier were both film actors and Broadway performers. Her father, Michael Barrier, was also an actor and her mother danced with the Lester Horton Dancers.