Our line matches your line, with descrepancies.

Both match up on Dennis McGee & Bridget O'Conner.
We stem from their son Colonel John McGee, b:1756, d:1804.
he married Elizabeth Holt (not Nancy?) b;1790 d;1764
Their other son Patrick McGee, b:1750 d;1818,

I have no other information on Patrick or any other siblings to substanciate the connection.

Our line came from Antrim County and also New Carlyle and settled in what is still known as McGee's Mills, PA. I only have the record of the two brothers born to Dennis & Bridget, where did you resource this information, so it can be substantiated.