One same-sex couple wed in Harford County Circuit Court on Jan. 2, according to Clerk James Reilly.
David Wilhelm and Casey Annon were married at 1 p.m. in Bel Air, Reilly said, on the first day the courthouse was performing same-sex ceremonies.
The Civil Marriage Protection Act took effect officially on Jan. 1, after Maryland voters upheld the law legalizing same-sex marriage in November.
Since state offices were closed for New Year's Day, Wednesday was the first time couples could marry inside the Harford County courthouse.
At least one other same-sex couple has married in Harford County. Havre de Grace City Councilman Joseph Smith and Havre de Grace native Don Starr wed in a Jan. 1 ceremony.
Smith and Starr obtained their marriage license from the Harford County Circuit Court last month after Maryland Gov. Martin O'Malley said officials could issue the licenses in advance, noting the effective date as Jan. 1, since offices would be closed for the holiday.
Harford County has had eight applicants for same-sex marriage licenses since it began accepting applications on Dec. 12, Reilly said Jan. 2.
As circuit courts across Maryland prepare for the first same-sex couples to wed, some public employees have pushed back. Deputy clerks in St. Mary's County have asked to be excused, citing their religious opposition to same-sex marriage, according to The Washington Examiner.
In Harford County, Reilly said there has not been any issue at the Circuit Court.
Said Reilly: "My staff and I are here to serve the public as the law requires."
Annapolis Patch editor Anna Staver contributed.