Oh, my, how the Pettigrew/crew mysteries abound, but maybe collectively we can solve a few.
Here's the link to that 1883 Butler Co. history:
The bio mentioning Andrew is actually about his son Samuel C., about 1/3 down the page.The 1880 census for Samuel has himself, father and mother all born in PA.So, Robert and Andrew were both b. in PA sometime in period of 1771-early 1780s.
1860: Washington Twp. Butler Co.
Samuel C Pedigree 44
Mary Pedigree 42
Mary Ann Pedigree 21
Matilda J Pedigree 15
Lovina Pedigree 10
1880:Washington Twp. Butler Co.
Samuel Pettigrew 64self/fa/mo b. PA; shoemaker.[Fa Andrew b. PA. by 1780.]
Mary Pettigrew 61
Here is a big mystery.If Robert and Andrew were both b. in PA before 1790, and resided there in later years, why is there no PA 1790 census record for their father(s)?I did find a 1786 Westmoreland Co. tax list and no Pettigrews were on it:
The 1883 bio says of Andrew's unnamed father:
"He came to America when a young man, and after living in the State of Virginia and other localities, at last settled down on the borders of Brush Creek, Westmoreland Co., Penn., where he died."
Maybe they were in VA for the 1790 census, but the VA census is not existent, so can't check there. I know the 4 Pettycrews (all my Dauphin Co. kin)and 3 Pettigrews in the PA 1790 census. I don't see a possible father for Andrew and/or Robert among the Pettigrews (James Pedegrue, Northampton Co.; James Petegrew, Cumberland Co.; Ed Pittegrew, Allegheny Co.)The first two died in their counties, the last had two sons (William and David) in 1790.
David is the one you mentioned in the 1830 Allegheny Co. PA census.He and bro William were early settlers in Mt. Vernon, Knox Co. OH in 1809, but David returned to Allegheny Co. PA until after 1830, then moved again to OH.Ed, Wm. and David all were b. in IR, and I have tentatively traced them back to Belfast.
Yesterday I tried again to find John Pettigrew(Pedegare of 1810 Rostraver Twp) in a later census, but no luck.It is indeed reasonable to think that Jacob might be his son.Maybe John died after 1810 and Jacob went into his uncle Robert's care, and that's why Jacob showed up on the tax rolls in N. Huntingdon Twp in 1820s.All speculation, of course, at this point
The 1810 reading of John Pedegare is speculative, too.If you can use ancestry.com, check the census image.It is very faint, and I am surprised that the entry was indexed as it was.I need to check the actual film and see if I can determine the accuracy of the index.
My guess is that the 1830 John Pottegrew of N. Huntingdon Twp. was likely Robert's son.John's age group made him 15-19, therefore b. 1811-15.
Re your records:
"Pettigrew John, and Dorothy Deemer, both of N. Huntingdon married on Tuesday February 3, 1830 by Jno Shrum Esq. (2-19-1830 The Greensburg Gazette)"
Don't know if this is relevant but found these census records:
1850:Dorothy Pettygreen Medina, Warren, IN b. abt 1789 Pennsylvania
1860:Dorothy Pettygrove Milford, Warren, IN 65 b. abt 1795 Pennsylvania
"Howell, Thomas and Sinah Pettygrew both of N. Huntingdon Twp. married on Thursday August 19, 1824 by Andrew Byerly, Exq. (August, 1824 The Greensburg Gazette). I searched the name “Sinah” and found it to be of German distinction."
Here is another Howell again, so possibly Thomas is a relation of Hannah, wife of Robert.Also, my guess is Sinah was a nickname for Josinah.In the 1850 census Jacob's dau Josina was listed as Sina.Maybe this earlier Sinah was Jacob's sister.Check if she had a son named Jacob.
I'll leave you with a mystery that has puzzled me for years.Observe the record which follows:
Author:Kelker, Luther Reily,
Book:History of Dauphin County, Pennsylvania, with genealogical memoirs
New York: Lewis Pub. Co., 1907, 1932 pgs.
Signers of 1784 Petition against having Harris' Ferry the county seat of newly formed Dauphin Co. (language of petition makes it sound like it is solely from citizens of Lebanon, whose signatures immediately follow it, but the other townships follow that of Lebanon.):
Vol. 1, pp 60-61:
Township of East Hanover:
James Pettycrew, William Petegrew, Mr. John Petegrew,Willm Pettycrew.
Township of West Hanover:
John Petticrew, James Petticrew
I know who the Pettycrews were in East Hanover (my direct ancestors.)And I know the Petticrews of West Hanover (immigrant David's sons.)But I had no clue who the Petegrews of East Hanover were.I thought they must be relations to the other Petticrews, but they only appear in this one record in Dauphin Co.With your Pettigrew line DNA-matched to the Dauphin Co. 'crews, I'm thinking maybe these Petegrews are your kin, who resided briefly in Dauphin Co. then moved on to western PA.
There's more.Immigrant David d. 1784 and was buried in Dauphin Co.In the 1790s, David's wife and daughters and their husbands moved west to Washington Co. PA, Amwell and Bethlehem Twps.
Something more to ponder, yes?