How did this get so mixed up? Margaret Weir and Rose Peacock were Matty's sisters,possibly.
Joseph Black was a bachelor.(confusion re his birth year - 1822,1825,1831,on various sources.He was over 90 when he died in 1914,so 1822 may have been right)
Agnes Black was born Co Down to Joseph Black and Martha ??,but Joseph Black and Matty Weir/Craig,were never in co Down.They lived their entire lives in Lambeg,in the same house,and all the children were born there(with the possible exception of Jane),including my mother and me.
Joseph Black b 1865,was Joseph Black and Matty Weir/Craig's only son,brother of my grandmother Elizabeth 1867.I thought this was who you were referring to,on the census.(in fact,nothing more can be found on this man,other than an elderly relative saying he had gone to Glasgow as a very young man)
Matty Weir/Craig's father was Joseph Weir,and my searching never found a Margaret or Rose born to a Joseph Weir,but of course that doesn't mean that there wern't,just that I never found them.
I can't believe,or understand, how this got so mixed up,so I think we'll just leave it here, and if I find anything more,well and good,if not,so be it.
Thank you for your efforts so far. Agnetta.