Washington DC, April 14 -- Jean Marsh, the Emmy-winning actress and co-creator of the acclaimed 1970s British drama 'Upstairs, Downstairs,' has died at the age of 90, reported Deadline.

The cause of her death was due to complications from dementia, according to her close friend Michael Lindsay-Hogg, who shared the news with the New York Times, as quoted by Deadline. The actress reportedly passed away in London on Sunday.

Marsh was popularly known for her role as Mrs. Rose Buck, the household's parlormaid, in the British drama 'Upstairs, Downstairs'.

In 1975, she won an Emmy Award for Outstanding Lead Actress in a Drama Series for her performance in the show.

According to Deadline, the British series ran from 1971 through 1975, encompa...