Ruth Ellis (July 23, 1899 - October 5, 2000) was an open lesbian, and an LGBT rights activist.
This was the site of her home, which was torn down for an "Urban Renewal" project.
Ruth used to have parties at her house. She also had a print shop in her home, and was a media maker.
Sources: http://en.wikipedia.org/wiki/Ruth_Ellis_%28activist%29