I've appreciated the information from Gary Petticrew about the early line in America. It certainly comports with the 1790 census records for Dauphin County, PA, in which John Pettycrew, a second John Pettycrew, and James and William appear. I also read the Revolutionary War pension record for John Petticrew (S29374) at the National Archives last week; it provides fascinating information, as follows. However, nowhere is he identified with a middle name of "Finley" or with an initial.
His narrative, signed with his mark, indicates that he was born in Ireland on Mar. 20 1758 (he states that the date came from his father's bible), lived in Lancaster County PA, Rockbridge County, VA and Montgomery County Ohio and "now lives in the Territory of Michigan" in 1833, the year of his application. He enlisted in the Revolutionary Army on June 10, 1776 under the command of Brig. Gen'l Fland (or Iland-hard to read)and Col James Cunningham and served in the Battle of Long Island, Westchester, and White Plains. He was discharged from his 6 month commitment on Dec. 10, 1776 after crossing the Delaware River with Washington's troops. He re-enlisted in 1777 and served in the left wing of the army at the battle of Brandywine under General Porter, Col. Watson, and Capt. Ambrose Crane. He also relates serving in three conflicts against the Indians and an accompanying statement says that he "behaved as a good soldier". His pension record was filed in LaGrange township, Cass County, Michigan in 1833 and acted upon in 1834. (The Pension Act of 1832 had made benefits available.) The 1840 Michigan Territory census lists John F. Petticrew (a male between ages 30-40)in LaGrange, Cass County on p. 214. presumably, he had gone to live with his family and died there in 1838 (Patriot Index, DAR, which also lists wife as "Elizabeth"). A second John Petticrew with 5 children appears in Jefferson Township, Cass County in the 1840 census on p. 226. He also is 30-40 years old.
Any information to verify that John Petticrew who filed this pension application is the same person as John "Finley" Petticrew, as noted by some family historians, is appreciated.