The name of a Saint Senan is recorded on the Irish calendars at July 10. The most famous saint of this name is the patron of Scattery Island but it is one he shares with at least twenty others. As Canon O'Hanlon explains, we have no other information about the saint Senan commemorated on July 10:
St. Senan.
St. Senan.
The name of Senan is set down in the Martyrologies of Tallagh and of Donegal, at the 10th of July. With other saints of this name, Colgan notes him, but without any further distinction. The Bollandists have an entry, at this date, regarding him.