There’s an online tree with around 53,400 names…
http://www.bellsite.id.au/Site/family_trees.html http://www.bellsite.id.au/gdbtree/HTMLFiles/HTMLFiles_77/P42996.htmlhttp://www.bellsite.id.au/gdbtree/HTMLFiles/HTMLFiles_02/P42997.html http://www.bellsite.id.au/gdbtree/HTMLFiles/HTMLFiles_106/P27678.html It seems that someone has informed the tree owner that Mary MAKIN died giving birth to their Great Grandfather, Albert George DONNELLY …. The reference shows the source as someone with similar name to our OP, and messages were dated 27 August 2015.
ADD
Mention of William DONNELLY at Parramatta.
I have been given some speculative info which I share.
Please consider a check of the 1825 General Muster Parramatta District ... two chaps named as William DONNELLY. One with a wife as Esther CREW and the other with a wife as Elizabeth CROOK, both having children in same year/s as each other.
Perhaps one of lasses had a son named after the child’s dad ...who then in the 1840s had a son named Christopher, in the Parramatta district (which at that time was extensive, right along the River on the northern side, to meet St Leonards district) etc ...
Many of the births in NSW prior to civil registration simply did NOT result in a baptism that was re-transmitted to the NSW Chaplains. There's many children who were not baptised. So it is very possible, likely even that there's two chaps called Christopher DONNELLY in the large area from say Young/Grenfell south to the Murray river and across from say Braidwood to west of Canberra.
JM