Built in 1832, Lock 22, nicknamed Pennyfield Lock, was part of life along the C&O Canal and became associated with many stories, including President Grover Cleveland seeking refuge there from White House pressures on fishing trips and a lockkeeper who drank too much and let water out of the lock too quickly, sinking a canal boat and its 113 tons of coal. The lock was named for father and son lockkeepers George and Charlie Pennyfield. George tended the lock from 1890 to 1910, and Charlie joined the C&O payroll in 1900. Charlie was the last lockkeeper to live in and work from the lockhouse, and the Pennyfield family remained there after the canal closed in 1924.