Complex sentence: Kitty Clive became a household name along with other theatre greats of the time such as Lavinia Fenton and Susannah Cibber, and brought her earning power and fame to play as an open supporter of actors' rights.
Split into simpler sentences: Kitty Clive became a household name along with other theater greats of the time such as Lavinia Fenton and Susannah Cibber. Perhaps because of her earning power and her fame, Clive became an open supporter of actors' rights.