Would love to exchange information.The Daniel Deer you are looking for is the son of John Deer (no dates yet) and an unknown spouse.
In the 1790’s John Deer, showed up in Pine Township (now part of McCandless Township) in Allegheny County, Pennsylvania.This is a bit north of Pittsburgh.One source says he was German and took over land from a recently deceased Jacob Deer.(1)I didn’t find any corroborating evidence of this.What I've been finding leans toward Scotch-Irish, as the family is Presbyterian and many members can be find in nearby cemeteries.
John Deer shows up in the land maps owning438 acres of land in McCandless Township which was warranted to him 15 Feb 1816 and surveyed 1 May 1816. (2)
A history of the county (3) states that John Deer had several sons:David, George, Henry, Jacob, John, and Daniel.By the time this history was published in 1889, they were all deceased.However, it is noted that Daniel’s son, John C., still lived on part of the family homestead.
Census records show that Daniel had several children: John(abt 1827), William (abt 1829), Eliza (abt 1832), Jacob(abt 1837), and Jonathan (abt 1838).Additional years census records helped me determine that this Jonathan is a g...grandfather on my family tree.Jonathan was a plasterer by trade.In 1860, prior to the civil war, he lived in Allegheny City, Pa, in a rented house or apt. with his brother Jacob (a carpenter) and Jacob’s wife Martha and their son Charles (4).
(1) History of Allegheny County, Pa by Samuel W. Durant: L.H. Everts 1876.Page 167. (2)The Warrantee Atlas of Allegheny Pennsylvania, 1914. Map of McCandless Township (3)History of Allegheny County, Pa.; A. Warner & CoPublishers, 1889. Page 172. (4) He is listed as white in the census records.