Son of John James Piatt and Sarah Morgan Bryan Piatt [1836-1919], both of whom were poets.
John James Piatt was American Consul in Ireland.
Arthur was born in the District of Columbia.

Recorded in the 1880 census, living with his parents John J. Piatt and Sallie M.B. Piatt, at Miami, Hamilton, Ohio. Recorded as being born in 1867, in the District of Columbia.

Arthur Donn Piatt married Anna Hester Sigerson in Hampstead, London, in the quarter ended June 1900.


In the 1901 census, the Piatt's were living at 31 Sandymount Avenue, Dublin.
present were
Arthur Donn Piatt, aged 33, United States Deputy Consul, born in USA.
He refused to give information on his religion.
Anna Hester Piatt, his wife, aged 30, a Journalist.
Anna gave her religion as Roman Catholic.


In the 1911 census, the Piatt's were living at Highfield Road, Rathgar, Dublin.
present were,
Arthur Donn Piatt, aged 43, American Vice + Deputy Consul, born in United States.
Anna Hester Piatt, his wife, aged 40, a Journalist, born in Rathmines, Dublin.
They had been married 10 years and had 2 children, 1 of whom was alive
Donn S. Piatt, aged 6, born in Rathmines, Dublin.
Once again, Arthur refused information on his religion.
Anna and Donn were recorded as Catholics.

Their son Donn Sigerson Piatt was born on 13 February 1905, to Arthur Donn Piatt and Anna Hester Sigerson, of 23 Charleville Road, Rathmines, Dublin. He was baptised at Rathmines Church [RC] on 13 March 1905.
He married Elsie Colgan, of Westmeath.
He died on 8 April 1970.

Their daughter Eibhlin Hester Sigerson Piatt was born on 30 Sept. 1911. She died on 6 Sept. 1986. She married Emmett Humphreys [3 Oct 1902-28 Apr. 1977] on 6 Sept. 1934.
They are buried at Saggart, Co. Dublin.



The cemetery records note the death of Arthur Piatt, of 63, Highfield Road, Rathgar, Co. Dublin, aged 46, on 12 April 1914, who was buried in plot JJ 215, St. Patrick's Section.