 Yarrow was renamed several times, but today we know Yarrow as Cottage City.Known as the Dark and Bloody Grounds, the former site of the Bladensburg Dueling Grounds was located along Dueling Creek and Bladensburg Road; the historic location now shares the present-day boundary of the towns of Cottage City and Colmar Manor.Cottage City and Moyer's Mill played a key role in the Battle of Bladensburg during the War of 1812.