|After a long study, I have concluded that John Parish must be a son of Thomas. This is not proven, but was suspected by Savage in the 17th century and it fits the known facts well.|
Note that Thomas actual profession as a doctor, but he was listed as a clothier on the manifest of the "Increase". My guess is this decption was required to allow him to obtain permission to leave England.
From Savage: PARISH, *JOHN, Groton, perhaps s. of Thomas the first, or a br. as seems more likely, was says Butler, an orig. propr. and in 183, serv. on a com. with Page and Lawrence, others of the earliest sett. to prove the ld. rights of the town bef. its destruct. in Philip's war; rep. 1690. JOHN, Groton, prob. s. of the preced. by w. Mary had Lydia, b. 20 Apr. 1687; and Elizabeth 19 Mar. 1691. *ROBERT, Groton, perhaps s. of the first Thomas, by w. Mary, prob. d. of John Blanchard, had Mary, b. 5 Jan. 1668; Ann, 2 Sept. 1669; Robert, 20 Nov. 1670; Ann, again, 10 Sept. 1672; and Mary, again, 8 Sept. 1674; rep. 1689, at the Dec. session for the neighb. town of Dunstable. THOMAS, Cambridge, came in the Increase. 1635, aged 22, was a physician, tho. in the custom-ho. rec. call. possib. for decept. a clothier, freem. 18 Apr. 1637, by w. Mary had Mary, b. 3 Apr. 1638; Thomas, 21 July 1641, H. C. 1659; and Mary, again, 3 Apr. 1643. Prob. he went home, liv. at Nayland, Co. Suffk. as his atty. Thomas Danforth calls him. THOMAS, Cambridge, came the preced. had w. Mary, wh. d. 8 Oct. 1674, aged 23. The coll. catal. of 1698 did not mark him as dead, and Farmer thot. he liv. to 12 Sept. 1707.