Unfortunately, I believe you have your Allen families mixed up.There were two Ralph Allens in Sandwich.Ralph Allen, Sr. was married to Esther Swift and was a mason by trade.He was not the father of the Increase Allen who married Rachel.Increase Allen's parents were Ralph Allen, Jr. and his wife, Susanna.Ralph Allen, Jr. was a wheelwright and planter by trade, and the son of George Allen and his first wife (name unknown).
The Rose Allen who married Joseph Holloway was also the daughter of George Allen and his first wife. Rose was therefore the sister of Ralph Allen, Jr.
Although there is some speculation that the Ralph Allen, Sr. who married Esther Swift may have been a brother to George Allen, this has never been confirmed.
I hope you do not mind me butting in on the Allen's but I am seeing a lot of circular discussion going on.Most of the issues I see being discussed were cleared up many years ago in the New Jersey Genealogical Magazine.