Marina Sirtis (born 29 March 1955) is an English-American actress. She is best known for her role as Counselor Deanna Troi on the television series Star Trek: The Next Generation and the four feature films that followed. Biography Marina Sirtis was born in the East End of London, the daughter of working class Greek parents Despina, a tailor's assistant, and John Sirtis. She was brought up in Ha...