He attended high school in Westerly , Rhode Island , and became superintendent of a mill in Providence before he was 21 .
Gregory was born in Astoria , Long Island , New York on August 3 , 1849 .
Gregory attended high school in Westerly , Rhode Island , and became superintendent of a mill in Providence before Gregory was 21 .
Gregory was born in Astoria , Long Island , New York on August 3 , 1849 .