Marjorie Monaghan

Marjorie Monaghan
Born
Marjorie Susan Monaghan

(1964-03-19) March 19, 1964 (age 62)
Orange County, California, U.S.
EducationMiami University
OccupationActress
Years active1990–2005
Spouse
​
(m. 2011)​
Websitemarjoriemonaghan.com

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

Early life

Monaghan was born in Orange County, California and raised in the Midwest. She is of Irish-Celt ancestry and started acting in high school. She graduated cum laude from Miami University in Ohio, then headed to New York where she obtained her first role as a firefighter in the short-lived 1990 TV series H.E.L.P. created by Dick Wolf.

Career

Monaghan has performed in a number of science fiction television roles, including starring as JoJo Thorson in Space Rangers and starring as Freya in the Star Trek: Voyager episode "Heroes and Demons". In 1999 she appeared in all eight episodes of Rescue 77 as Kathleen Ryan.

Monaghan is best known for her appearances in 7 episodes of Babylon 5 as Number One (Tessa Holloran).

Personal life

Monaghan started dating novelist, producer, and screenwriter Grant Rosenberg in 2001 whom she married on February 2, 2011.

Filmography

Film

Year Title Role Notes
1990 The Bonfire of the Vanities Evelyn Moore
1991 Aftermath: A Test of Love Erica TV movie crime thriller
1991 Regarding Henry Rosie Alvarez
1992 Nemesis Jared
1994 Jack Reed: A Search for Justice Lorelei Bradley TV movie crime mystery starring Brian Dennehy
1998 The Warlord: Battle for the Galaxy Jana
1998 Sorcerers Kree Unfinished animated fantasy film
2005 The Great War of Magellan Science fiction proof-of-concept pilot short film by Richard Hatch

Television

Year Title Role Notes
1990 H.E.L.P. Jean Ballantry 6 episodes (entire run of the series)
1990 Quantum Leap Edie Landsdale Episode: "One Strobe Over the Line"
1990 Law & Order Cathy Episode: "Prisoner of Love"
1991 Murder, She Wrote Elaine Franklin Episode: "Thicker Than Water"
1991 L.A. Law Amanda Hagen Episode: "Eli's Gumming"
1993–1994 Space Rangers JoJo 6 episodes
1995 California Dreams Coach Hardaway Episode: "Tiffani's Gold"
1995 Star Trek: Voyager Freya Episode: "Heroes and Demons"
1996 Deadly Games Sharon Episode: "Dr. Kramer"
1996 The Pretender Martha Poole Episode: "Every Picture Tells a Story"
1997 The Sentinel Elaine Walters Episode: "Poachers"
1997 JAG Seaman Alice Tuppany Episode: "Against All Enemies"
1997–1998 Babylon 5 Number One (Tessa Holloran) 7 episodes
1999 Rescue 77 Kathleen Ryan 8 episodes
1999 Becker Amanda Episode: "Imm-Oral Fixations"
2004 Andromeda Louisa Messereau 2 episodes:
"The Dissonant Interval: Part One"
"The Dissonant Interval: Part Two"

References

  1. ↑ Monaghan, Marjorie. "The Official Marjorie Monaghan". marjoriemonaghan.com. Marjorie Monaghan. Retrieved 23 December 2025.
  2. ↑ Anders, Lou (August 1998). "Marjorie Monaghan: Looking Out for Number One". Babylon 5 Magazine. Vol. 2, no. 1. Titan Magazines. p. 28.
  3. ↑ Anders, Lou (September 1998). "Who is Number One?". Babylon 5 Magazine. Vol. 2, no. 2. Titan Magazines.
  4. 1 2 "Marjorie Monaghan - Biography". IMDb. Retrieved 2019-05-08.
  5. 1 2 "The Official Marjorie Monaghan". marjoriemonaghan.com. Time Machine Collectibles endorsed by Marjorie Monaghan. Retrieved 17 July 2026.
  6. 1 2 "Who is Number one? ... you are ... Marjorie Monaghan". The 5 Times Magazine. UK: The Babylon 5 UK Fan Club: 6–7. Autumn 1997. Retrieved 2019-05-08.
  7. 1 2 "Radio SciFi Interview". www.kelesa.net. 2001–2002. Retrieved 2019-05-08.
  8. ↑ Richardson, David (December 1997). "Marjorie Monaghan: One on One". TV Zone (97). Retrieved 2019-05-08.
  9. ↑ Swallow, James (September 1998). "Freedom Fighter". Starlog (254). UK: 50–53. Retrieved 2019-05-08.
  10. ↑ Willman, Chris (January 6, 1993). "Fasten Your Seat Belts, It's Gonna Be a Derivative Ride!". Los Angeles Times. p. F1. Retrieved December 12, 2008.{{cite news}}: CS1 maint: deprecated archival service (link)
  11. ↑ "Marjorie Monaghan Out For Series V Role". TrekToday. April 18, 2001. Retrieved March 15, 2014.
  12. ↑ Weintraub, Joanne (March 3, 1999). "Here comes a crop of new shows". Intelligencer. Doylestown, Pennsylvania. Milwaukee Journal Sentinel wire service. p. 74.
  13. ↑ Steelman, Amy (March–April 1999). "Relating To Ryan". Vine Lines Magazine. Retrieved 2019-05-23.
  14. ↑ Lou, Anders (September 1998). "Who is Number One?". Babylon 5 Magazine. 2 (2): 38. Retrieved 2019-05-08.