O’Donnell’s began in 1922 when Tom O’Donnell opened the Sea Grill at 1207 E Street NW in downtown Washington, DC. Now, O’Donnell’s Market operates at 1073 Seven Locks Rd. in the Potomac Woods Plaza (Rockville/Potomac, MD). Our very own Mr. MoCo recently ranked O’Donnell’s as his favorite crabcake in Montgomery County and in the top five in the entire state of Maryland. Photos are available below.