Hi Peter
)
Bear with me please ....
Per the 1841 census, Charles Magee (Husband of Margaret ) was born abt 1774. Jane Davis was born abt 1768.
If Jane is both the mother of Charles Magee and Mary Davis, then we have a problem with the ages of Charles and Jane (6 year age difference). She can't be the biological mother of Charles. Granted Charle's father ( who was James Magee), could have married twice and had Mary Davis by his 2nd wife (possibly Jane Davis). I'm inclined to think this is not the case. The age gap between Mary and Charles (if they are siblings) is 41 years. I do know that Charles had at least one other sibling who as James Magee jr. That means he was likely older than Charles, so we can guess an age difference then of perhaps 43 years with James jr and Mary Davis. Assuming James sr was about 23 -25 years when he married, then we can guess his birth date as circa 1749.
IF Mary is his daughter from a 2nd marriage, then he would have been about 66 years when she was born. Again, not impossible, but I'm thinking not likely?
Am I making sense?
That puts me back to Margaret Magee ... maiden name to be determined, wife of Charles Magee and mother of William Magee who names Aunt Mary etc. The 1841 census shows that she was born abt. 1792 /3 in Cavan.
(1)Thomas Davis was born abt 1797 ... a more realistic age difference IF they are siblings. Thomas's wife Mary would certainly still be an Aunt to the Magee's
(2) Mary Davis was born abt 1815 making her 23 years younger than Margaret. IF they are siblings, this age gap is big but not unheard of (have a few of these in my tree).
I really think that the key lies with Margaret ... who's sibling is she? Is her age listed correctly on the census (something that was not very accurate back then) .. she was born close, it seems, to the marriage date of Agnes & Robert Davis... Does that cancel her out, then, to be their daughter? I do wish that we had headstone or SOMETHING to help us out with this!
Does this change your hypothesis?
jenni