|Death||Murdered by Clarice Willow|
Several others in her group marriage (which ones are biologically hers, if any, is unknown to date)
|Marital Status||Married to Clarice, Desiree, Helena, Tanner, Nestor, Rashawn, and Olaf Willow plus at least a couple of other men|
|Portrayed by||Anita Torrance|
|Mar-Beth Willow is a Cylon|
|Mar-Beth Willow is a Final Five Cylon|
|Mar-Beth Willow is a Human/Cylon Hybrid|
|Mar-Beth Willow is an Original Series Cylon|
|Mar-Beth Willow in the separate continuity|
|Mar-Beth Willow in the primary continuity|
Mar-Beth reacts negatively to Amanda Graystone's presence after Amanda is invited by Clarice to stay with them, believing that having the woman known in the Caprican media as "Terror Mom" with them risks drawing unwanted attention. Also, Mar-Beth is handling her pregnancy without a due date or any tests, trusting in her faith and her family, and she does not like Amanda's questioning of this (CAP: "False Labor"). Mar-Beth eventually asks Amanda to leave, but is dissuaded after Amanda relates a story about her difficult experiences during and after her own pregnancy with her daughter Zoe Graystone, and her admiration for Mar-Beth's family. Following this reconciliation, Mar-Beth gives birth to her baby at home; she allows Amanda to be involved in the delivery (CAP: "False Labor").
Unknown to Mar-Beth and the rest of the Willow family, Amanda's true motivation for staying is to give information to Agent Jordan Duram of the Global Defense Department, who suspects the family's involvement in Soldiers of the One terrorist activities. When Amanda's cover is threatened, Duram falsely reports that Mar-Beth is his confidential informant. The report is leaked back to Clarice, who secretly follows Mar-Beth to a secluded park and cuts her throat. Two of Mar-Beth's husbands collect Mar-Beth's body, which is later found in the Theoresos with her head and hands severed (CAP: "Blowback").