Yes my grandfather was from a small town and apparently "everyone knew".
The small town is in Longford but quiet close to the bigger towns of Granard and Castlepollard in Westmeath, so the mother may be from one of them or from the small town as well.
The only person who knows now (that we know) is a cousin of my grandfather but she doesn't want to talk about it, all other family are dead. Unless older people in the town still know but we wouldn't know who to ask, we don't have any family still living in that town.
If the mother was from the town would the child have been baptised in the local church? Because we were at the church before we found out about the sibling and the priest was really helpful letting us look over the records to find my great grandparents. We could go back there to search for illegitimate children born in the timeframe.
Second question, if she was sent to a mother and baby home would she have been sent to Castlepollard or did they normally send the mothers further from their homes?