Hello Valerie, this John Parker and unk. Carnell wife didn't have a son named P.M. Parker born in 1825, their son Pystil M. Parker was born in July 1841 and died in Nov. 1858 according to info. from a descendant of James M. Parker and Anna Carnell. He is our Pystil M. Parker and was raised by James M. Parker and Anna Carnell who was Hubbard and Eliz. Dixon Carnell's oldest daughter. They moved to Texas in the late 1850s and supposedly our Pystil M. Parker died before they left and is buried in the Hooper Cem. on the old Hooper farm on Turkey Creek in Humphreys Co. TN. I do believe that some of James M. and Anna Carnell Parker's family did come back from Texas to the Humphreys Co. TN area after the Civil War. They may have named a son Pystil M. Parker but he definitely wasn't the one that was the son of John Parker and unk. Carnell wife.
Our Pystil M. Parker born 1841 was John Parker and unk. Carnell wife's youngest child and I believe the unk. Carnell wife probably died when he was born or shortly afterward. Their father John Parker died in 1846 and left these minor children mostly with the wife's Carnell sisters. Most of these children ended up in Chickasaw Co. MS by 1850 which, when I found out my Frances' maiden name was Parker, convinced me she was also a child of this John Parker and unk. Carnell wife. John Parker was suppose to have died in 1846 but I'm not sure where and I believe these children all made a trip to Chickasaw Co. MS. I also believe that my 4th g.gr.father Felix G. Wood's wife might have been a Parker, Hooper or a Carnell herself of Humphreys Co. TN and is the reason all these children went to Chickasaw Co. MS in cc1847. I also believe this unk. Carnell wife was this John Parker's 2nd wife, that he was first married to an Elizabeth Weaver and had several children by her. I found info. that Eliz. Weaver died around 1821 and they didn't live in Tenn. but further north somewhere, maybe in Indiana, it gets confusing. I believe John Parker came to the Stewart Co. TN area after Eliz. Weaver's death and married this unk. Carnell dau. around 1823-24 and had several more children by her. There is some info. of an older Pystil M. Parker but I don't have his info. in my FTM files but I think he was older than being born in 1825. I'm thinking he was born either in the late 1700s or very early 1800s. If you found another Pystil M. Parker born abt. 1825, I don't know with whom he connects, but he definitely wasn't the child of this John Parker and unk. Carnell wife. They did have a son named Richard Montgomery Parker born in 1833 who is in 1850 Stewart Co. TN, in 1860 & 70 Chickasaw Co. MS, married there, then onto Drew Co. AR by 1880 and is still there in 1900 and I believe died there bef. 1910 but I haven't got any actual date of death or place of burial.
I'm sure the Pystil M. Parker you found connects with these Parker's who were in that area of Tenn. I found quite a bit on Parker's of Stewart Co. TN whom I'm positive connect to these Parker's of Humphreys Co. TN.
So good luck for this is one confusing family tree and I need to work on them some more but right now I'm in the middle of putting my family tree files on Ancestry.com. I have a tree called "Southern by the Grace of God" if you want to check it out but I'm not sure I have my Parker and Carnell info. put in my tree yet. I'm working right now on my Perry tree which connects further back to my paternal tree, they came to Tenn. in the mid 1800s from Ole Virginny. I wish I could have been more help but every time I get into researching these Parker's I get more and more confused, thanks, Kay Hill Woods of Tenn.