Holles accompanied his father on Edward, 1st earl of Hertford’s embassy to Brussels in 1605, ‘being between the years of nine and ten’, and drew up observations on the Netherlands.
In 1624 Holles was returned for both East Retford and Mitchell, the latter borough being close to property owned by his father in Cornwall. He waived Mitchell to provide a seat for his younger brother Denzil.
Holles was again returned for East Retford to the first Caroline Parliament, but was mentioned only once in the surviving records, being named to attend the conference with the Lords about the general fast (23 June 1625).
Laud heard that Holles was a wise man, ‘not likely to follow any man’s courses to his own prejudice’, and Clarendon described him as ‘not only firm to the principles of monarchy, but of duty to the person of the king’. His Cavalier cousin Gervase Holles† found him ‘very pleasant company, both witty and affable’, but too eager to enlarge his estate to be trustworthy. It was this concern that made him, though a man of honour and courage, very often of both parties in the Civil War, without advantage to either in Mrs. Hutchinson’s opinion.
