When William H. Alley was born in 1835, in Southport, Lincoln, Maine, United States, his father, John Alley, was 33 and his mother, Elizabeth Dockendorff, was 33. He had at least 4 sons and 4 daughters with Sarah Catherine Nickerson. He lived in Boothbay, Lincoln, Maine, United States in 1850. He died on 21 July 1898, in Southport, Lincoln, Maine, United States, at the age of 63, and was buried in Southport, Lincoln, Maine, United States.