I'm finding in my Atwater history book a John Hoadley Atwater, born Jan. 23, 1824.He was the son of William Cutler Atwater.John married Jane Barber on June 9, 1853.She was born July 22, 1828.John died April 24, 1897.They lived in NYC.Their children were 1). John Albert Atwater, born Feb. 13, 1854, 2). Mary Elizabeth, born Aug.5, 1855, 3). William Cutler, born July 4, 1861, 4). Elsie Welling, born June 26, 1866 (unmarried), 5). Jane Leonard, born July 17, 1870.There's the Leonard name but I guess I don't know how it fits in.Jane's maiden name was Barber so it wasn't her maiden name.Maybe Leonard was her mother's maiden name.I also see Mary Elizabeth having a son named Leonard Atwater Smith.She marriedWilfred Smith. Hope this helps.