I know this is now 8+years on from your post, but i'm hoping you are still actively searching for info, or signing on to Ancestry! Or perhaps someone else will have some info relevant to me!
I'm investigating a different Hugh Allison(my great X3 grandfather), he Married
Rosanna McTaig/McTague/Montague in 1854 in Muiravonside and lived at
Rumford. He appears to have come over from Ireland With his parents, James & Maggie
Baxter Allison, and half a dozen other siblings, Joseph, James, John, William, Mary Jane &
Bridget.
My Hugh had a son James born 28.12.57 at
Rumford. Your Hugh - or at least another Hugh, married to an Agnes
Caldwell Allison, had a son William, born 20.08.57 at
Rumford Muiravonside. I am trying to see if there is some connection between the two - surely there must have been!
There are 2 other families having kids in
Rumford at that same time who may have been related:-
John & Mary
Baxter Allison, who's son Hugh was born 28.12.57 (yes, the same dob as above - its not a mistake!), at
Rumford &
Robert and Mary or (I think)Margaret
Rooney (various spellings with ie or just 1 o) who had 3 kids registered at
Rumford during the 1860's!
Any help or info gratefully rec'd!!
Jane