Philip, 4th Lord of Wharton 1685 by Sir Godfrey Kneller | Tate https://www.tate.org.uk/about-us/projects/tudor-stuart-technical-research/entries/philip-4th-lord-of-wharton-1685-by-sir-godfrey-kneller
The frame is in the ‘Kent’ style of the 1720s to 1760s