Hello Donna, Sorry for not answering sooner, but your message got me to doing a good bit of reading. Your research is not only valuable because of what it holds, but what's not there. This got me to rethinking alot about the Agnews in my family. I found the Sarah Agnew in the 1851 Census for Antrim. Correct age, father=William, mother=Jane, and several siblings. But these seem to have nothing to do with the Agnews of Kilwaughter Castle, even though from Antrim.
There are also a lot of question about the proprietry of the Castle which I can't exactly follow. For example from the info you sent the Old Squire, William Agnew, had only one son who died unmarried and young. This doesn't mean he didn't have children, but who got the castle directly after the Old Squire? Edward Jones Agnew? Did this son, Mr. Sinclair's pupil, have a name? Was Edward then a grandson as inferred in the early part of your info, or the son-in-law, as mentioned a little further down. And if he was a son-in-law, why would he have the name Agnew at all and not be referred to as, for example, Jones? Was Margaret Jones his wife or sister? And who took over the castle after her death? And who was Countess Balzani? Was she the daughter Georgina as someone suggested on the BBC page about Kilwaughter? Or really an illegitimate child born at the back of the house, as someone else in this forum supposed?The time line as I see it looks like this:
Patrick Agnew -> William Agnew (d.1775) -> Edward Jones Agnew (d.1834) -> Margaret Jones -> Countess Balzani???
I know these are a lot of questions and I'm sure I have a lot of research to do to answer them, but the most puzzling question is this: If the family was so prominent, why is it so difficult to find information about them on the net? Usually families like these are well documented. What do you make of all this?