(written from a Production point of view)
Fionnula Flanagan (born 10 December 1941; age 77) is an Irish actress who had three guest roles on Star Trek, spanning the three series Star Trek: The Next Generation, Star Trek: Deep Space Nine, and Star Trek: Enterprise. A costume worn by her in "Inheritance" was sold off on the It's A Wrap! sale and auction on eBay. 
Flanagan was born Fionnghuala Manon Flanagan in Dublin, Ireland, and trained at Dublin's Abbey Theatre. Her most notable work is the tour de force "James Joyce's Women", in which she played six different roles. Other notable roles include Catarine in the 1984 Star Wars spinoff television movie The Ewok Adventure. Film audiences may also remember her appearance as the housekeeper Mrs. Mills in the 2001 thriller The Others, or for her prominent role in John Singleton's Four Brothers. She also played a recurring role as Eloise Hawking in seasons three, five and six of Lost, with Daniel Dae Kim, Terry O'Quinn, Sam Anderson, and Alan Dale.
Other film work includes the action film White Mile (1994, with Robert Picardo, Jacqueline Kim, Dakin Matthews, Ken Jenkins, Dan Kern, Brian Markinson, Dan Gilvezan, Gina Ravarra, Brett Porter, Ken Thorley, Don McManus and Tom Lupo), the comedy Waking Ned Devine (1998), and the horror thriller Blessed (2004).
More recently, Flanagan portrayed the recurring role of former mayor Nicolette "Nicky" Riordon in eight episodes of the first season of SyFy's science fiction series Defiance in 2012/2013. Gary Hutzel, David Takemura, and Doug Drexler worked on the visual effects for this series and Allan Kroeker directed Flanagan in one episode.