Sarah Ruth Porter

Maryland and Virginia Colonials: Genealogies of Some Colonial Families, p. 363 ... By Sharon J. Doliante
https://books.google.com/books?id=1KvkiaQks-kC&lpg=PA839&ots=z8Ty7R...

Issue of Samuel and Catherine (Warner) Howard:

(I.) Philip Howard (q.v.)

(II.) Deborah Howard (q.v.)

(III.) Ruth Howard

(IV.) ?Sarah Howard (q.v.)

(V.) Susan Howard

[Could this be where "Sarah Ruth" came from?"]
Samuel's will mentions Philip, Deborah, Ruth and Susan, but no Sarah.

Sarah Howard is mentioned by Prof. Warfield as a child of Samuel Howard, and he goes on to say that she m. Peter Porter, Jr. (son of Peter and Frances Porter), who, in his will [?] named "his father Samuel Howard ..."

More research is needed to confirm or refute this. I cannot find another source that names Sarah Howard as a wife of Peter Porter II, so I am disconnecting them.