Marjorie Monaghan

Marjorie Monaghan
Born (1964-03-19) 19 March 1964
NationalityAmerican
OccupationActress
Years active1989–2005
Spouse
(m. 2011)

Marjorie Susan Monaghan (born March 19, 1964) is an American actress best known for her portrayal of Tessa Halloran (aka 'Number One') in the television series Babylon 5.