White Island named for "Shoaler" Capt. Joseph White, born 1750 and murdered Salem, MA 1830. One of only two lighthouses on the NH coast. Lighthouse established in 1789. Writer Celia Thaxter lived here in the 1840s until she was 12 when her father was lighthouse keeper. She later wrote about her experience on White Island in her books and poems including 'Among the Isles of Shoals', published in 1873.
With only 11 miles of coastline, I guess we don't need more than 2 lighthouses.