Morris W Roberts was a completely separate person from Morris Robers who died in Henrico Co. VA 1725. There is a book on Morris Wm Roberts of Wales that immigrated in 1668 and died after 1734. Historical collections relating to Gwynedd, a township of Montgomery County page 189 Morris Roberts, son of Robert Cadwalader, b. in Wales, immigrated, probably with his brother Cadwalader, 1698 and settled in Gwynedd PA https://familysearch.org/ark:/61903/3:1:3Q9M-CS42-F37P-V The book also goes over his relatives.
Morris Roberts, of Henrico Co. is shown in court cases as testifying in 1697, a full year before Morris Wm Roberts arrived. I have added plenty of actual sources/documentation to Morris Roberts of Henrico Co VA FamilySearch Profile, https://www.familysearch.org/tree/person/details/L898-Z7S.