Marcia Buompensiero joined the Guild in 2010. In 2012, she was elected to the Board of Directors. She has since been reelected several times. She currently serves as treasurer and since 2013 as managing editor for The Guilded Pen, the Guild's annual anthology. In 2018, the Guild presented her with a Rhoda Riddell Builder's Award for her contributions to the Guild in these two roles. She can be reached at treasurer@sdwritersguild.org.

Marcia is the author of Sumerland, winner of the 2017 San Diego Book Awards, Best Published Mystery. Writing under the pseudonym "Loren Zahn," Marcia also publishes the Theo Hunter mystery series: Dirty Little Murders (2009/2017), Deadly Little Secrets (2015), and Fatal Little Lies (2018). Deadly Little Secrets received a "highly recommended" rating from the SDWEG Manuscript Review Board and was a finalist in the 2015 San Diego Book Awards unpublished manuscript division. (For more information, go to www.greycastlepublishing.com). Marcia also writes nonfiction magazine articles about the history of San Diego's Little Italy.