For extra sources on your surnames these Co down names appear in the Blackwood Family history manuscript trees in the LinenHall library, Belfast. If you are going to visit give warning. I suggest you ask them for photocopying estimates if they think your knowledge relevant and you should be prepared to pay a fee for copying, post and packing, and perhaps some staff time and overheads. However if the material is really relevant when you get it, I suggest a further donation to this unique library that is always needing extra funds.. Linen Hall Library,17 Donegall Square North, Belfast BT15GB, Northern Ireland, Telephone: +44 (0)28 9032 1707, Fax: +44 (0)28 9043 8586, Email: <irish.reference[at]linenhall.com>.replace the [AT] with the symbol please
The references are
McALLISTER Vol 92
McMASTER Vol25
MAXWELLVols 17n, 43T, 79 Waring, 91
WALLACE Vols 4p124N Hollymount, 19p1N, 21, 27T, 28N, 29, 40N, 54 typed
Good luck in your quest, Jim