I have in my possession a copy of a book titled: "The Popham Ancestral Line of Theron Vasco Morrison" In this book there was a John Popham who exiled himself from England because of a problem that the Popham Family had with King Charles II. John migrated to Cork County in the south of Ireland He was born in 1605 and married Mary Harvey the daughter of the Lord Mayor of London, Sir St. Sebastian Harvey. In this section there is no mention of a Thomas Popham.
As a matter of interest Theron Vasco Morrison descends from the Popham Family in Culpeper Co., VA and he has traced his lineage all the way back to a Gilbert de Popham of Hants Hampshire, England who married Joan (Jane) Clarke around 1200. The Popham Family in England were apparently well off and connected to Royalty in one way or another.
Bernie in Virginia