Thank you, Hertslet. I apologise for not responding more promptly, but I have been away from home and unable to check my main database.
Like Neville, you must be my 6th cousin once removed! Pleased to 'meet' you too.
I read somewhere that William Alexander Allardice and Helen Guthrie had 13 children, 4 of whom were sons, but I have only found 12 so far, including 5 sons. I did not have anything on Hugh, so he must be the 13th child and the 6th of the 4 sons.
All information about this Allardice family will be of interest, and I have lots of information about the family of Helen Guthrie. We won't be able to contact one another off-forum until you have made 3 posts to the forum. So please do post twice more, then we can get in touch direct.