He set the office up in Manhattan and moved to Brooklyn where he and his wife, Grace, and their daughter, Gladys, lived at 336 Washington Avenue.
Dr. Frank L. Gosnell was assigned for student ministry while attending Union Theological Seminary in NY and met Helen Evelyn Conard.
He was made an official Purveyor to the Imperial and Royal Court by emperor Franz Joseph I of Austria.
Underwood died in "Blink Bonnie", his summer home in Wianno, MA, on Cape Cod,[7] and is buried at Green-Wood Cemetery in Brooklyn.
[8] The site of Underwood's mansion in Clinton Hill was donated by his widow and daughter to the borough of Brooklyn as a public park, named in his honor.