Charles Eustace Garratt was born in 1861, the son of the Reverend Charles Garratt of Little Tew, Oxfordshire.
Like many in the D.C.O. he was a public school and 'varsity' man who volunteered to serve as a Gentleman Trooper. In Charles Garratt's case he was educated at Clifton College and St John's College, Oxford.
After leaving Oxford, Garratt became a fruit grower in Florida. He was in England during the aftermath of 'Black Week' and volunteered for the D.C.O. in the rush to arms on the raising of the Imperial Yeomanry. After the war and his imprisonment he returned to the United States, though he visited England every year, as evidenced during the divorce case in which he was cited by his cousin for seducing his wife. They later married.
Garratt evidently volunteered for service in the First World War as well. He died in New York in 1921 and a memorial was erected to him in Little Tew church.