According to Wikipedia, "the early settlement of Arnold... began with the farm of John Arnold... a veteran of the War of 1812, [who] acquired 300 acres... on the north side of the Severn River."
According to MapQuest, "Benedict, Maryland is a small unincorporated town in Charles County, Maryland, located on the Patuxent River in Southern Maryland... Originally a fishing village in the late 17th century, it was named Benedict-Leonardtown for Benedict Leonard Calvert.
"In the War of 1812, Benedict was... where the British Army... landed on August 18, 1814, after having fought fierce naval battles with American naval forces in the Patuxent. From Benedict, the British began their march to Washington, D.C., ultimately burning that city before finally being stopped in the Battle of Baltimore."
Silly me. I guess I could have looked it up, too. What an interesting history about Benedict. Benedict to DC is a very long march!