William Atchison, lighthouse keeper
I'm looking for information on William Atchison, who was born in Ireland sometime in the 1830s and served in the Union Navy on the Great Lakes in the Civil War. He served as the lighthouse keeper at Cuttyhunk Island, Massachusetts, 1881-90, then briefly as keeper at Gay Head Lighthouse on Martha's Vineyard, Massachusetts, before serious illness forced him to resign. Any additional information would be greatly appreciated.