Complex sentence: Violet Kemble-Cooper (12 December 1886--- 17 August 1961) was a stage and film actress born in London and descended from a well-known theatrical family, the Kemble family.
Split into simpler sentences: Violet Kemble-Cooper (12 December 1886--- 17 August 1961) was a British stage and film actress. Born in London, she was a descendant from a well-known theatrical family, the Kemble family.