Sinann - Thank you for your reply. Ann is the sister of my g/grandmother and until you drew my attention to the link, the only other sibling my g/grandmother appeared to have was a brother, Joseph who disappeared from the Irish census by 1811. He was listed with his mother in the 1901 census - a death for an Ann Robinson is listed as 1908 - her death was registered by her son in law, Robert Wilson at his address.
If there is anyone who has recollection or connection of this family, I would be pleased to hear from them. Thanks and regards - Dinny.