Hi Jenn,
Sue don't you mean he married his favourite sister in law Not sure which of my remarks you mean

Robert Woolacott married whom
I think neice is closer to the mark

Robert Bennett was Mary Jane [first wife] brother.
Lily was his child.
So Robert was the brother in law to Robert Woolacott and his child seems to me more neice than SIL to Woolacott.
If it was RObert's wife I would say SIL.
Guess what Robert and Matilda's first child was named?
Mary Jane BENNETT born in RICH in 1871
Ref = 11527
That's nice. Robert's favourite sister perhaps Robert's sister was Mary Jane Bennett
Well, what a big day for me.
So much exciting information, thanks to all.
Big filing day ahead.
Sue