The Canneys and McGonigles of Clonmany

Hey there, looking for information on the Canneys and McGonigles of Inishowen. The ancestor for whom I have the oldest definite information is my great-great-grandfather Edward Canney, who was baptized in Dunaff on 16 June 1853 (though the document itself makes the name look like "Coney.") According to his baptismal record, and confirmed by his death record from 1922 in Boston, MA, his parents were named Daniel Canney and Anne McGonigle, and the baptismal record shows that the sponsors were named Hugh McGonigle and Mary McLaughlin. US records also suggest that  Edward had at least two older siblings who likewise immigrated to Boston: Margaret (born roughly between 1837 and 1845) and Michael (born roughly between 1840 and 1847). There may also have been another older brother named Patrick, born in the 1840s. I can't find the baptisms for them, though, as the Clonmany Catholic parish records available online only go back to 1852 at this time, and other online records, like Griffith's Valuation, aren't particularly useful.  And the only known children of Margaret and Michael in America either died young or did not have children (and Patrick may have died childless himself), leaving Edward as the only one with descendants in the present. I'm hoping to expand the family line as much as possible, for both the Cannys and McGonigles, especially if there are any distant cousins still living in Donegal today. Did Daniel and Anne have any other children? Who were their own parents and siblings? When were their births and deaths?  Any information would help.

Thanks!