Looking for pre 1840 Fee, Mills families

I have been trying to find info on my gggrandmother's family.  She was Elizabeth Fee.  She had a brother Michael and sister Margaret.  Michael and Elizabeth were born around 1816-1817, Margaret, unk.  Their father was John Fee, born around 1791.  I do not know the name of their mother.

Margaret married John Mills.  He was a legendary drunk (hey, I still talk about him), and she lied about her marital status and went to New Zealand on one of those 'taking the ladies to civilise the men' schemes in the 1860s out of Manchester.

Elizabeth married Hugh Mills.  They had children.  There was Mary, William and John--I believe many more are possible.  Mary was born, possibly in Ballybay, around 1838-39.  William was born in Jan or Feb of 1835, John in October of 1833.

I have letters that put Michael's departure around 1837.  The whole family ended up in Manchester, John Fee, Hugh and Elizabeth Mills, John and Margaret Mills and Michael married a Cheshire girl called Ruth Hill in Manchester in 1839.

The patriarch, John Fee was in Manchester for the 1861 census.  Michael wrote to Elizabeth about landmark and places around Manchester, so I imagine the entire family went from Monaghan to Manchester Lancs.

Around 1847, Elizabeth Mills and her husband booked passage to Canada.  They left Mary in Manchester, where she lived until her death in 1907.  She married at 16 had 8 or so kids who worked in foundries and mills from very young ages and she never saw her mother again.  Her descendants live around Salford.

Our family history has it that they crossed from Ireland on a coffin ship during the famine and that everyone got ill and when Elizabeth came to, only she and one son survived, that her husband and 6 children had died on the crossing.  And then she met Mr Bateman (from Bandon) who was wealthy Protestant gentry who married this shanty Catholic Irish wreck, and my ggrandfather and 2 more children were born to her in Canada.  Then they settled Kansas single-handedly!

The letters I have show that show that that's not very accurate.  William survived.  I think he was sold into indentured servitude in Canada at around the age of 14, as  tailor, and Mary was in Manchester, begging ma for passage to come to the states.  Those two were never mentioned in the family history.

I looked at the 1796 flax farmers and found some Fee names (too old for the John I'm looking for) tithe applotments and see a Hugh Mills growing flax in 1823, in Lissceeny, Muckno.  Michael mentions Drumgrole in his letters, and in 1869, when he visited after 32 years, he knew Wm Taylor, the sexton of the church.  I kind of figured that might be the church they attended before they emigrated.  They were C of E in Manchester and ME over here.  I'm guessing not Catholics.

I have more info, names from around Drumgrole, but I don't know if I'm in the right place  :)