Ancestry Family Trees has information concerning the Tyree/Wills connection. If it is correct. It has a bio for Dr Wills, and an obit for Martha Tyree Wills.
In checking the census records for around New Kent VA I may have come up with something other than what they have about James Tyree of New Kent and the Martha C. who he was married to in 1880. It may been two different Marthas however.