Dorothy Spence Spence (Roberts) - Sir Howland Roberts had two daughters, neither was named Dorothy.

Sir Howland Roberts is well documented & known to have had two daughters; Elizabeth who died an infant and Bridget his eldest child who married Edmund Trench.
I cannot find any evidence that he had a daughter named Dorothy, much less one who married a John Spence.
Erica Howton this profile will be a cuckoo child.