Ziegler is a descendant of Charles Carroll of Carrollton, a former U.S. Senator from Maryland and a signer of the Declaration of Independence. She is the owner of Carroll's Doughoregan Manor plantation house and estate in Howard County, and co-manages the 1,150-acre South Manor farm (originally part of Carroll's estate) with Ricky Bauer, a local farmer. She also owns Carroll Mill Farms in Ellicott City, Maryland.
