John, I see in your Wikitree you already have the extract about Derby and John Francis Mahony. Is the name Dermod interchangeable with Derby?
You also mentioned Dennis who died in France – where did you get that from?
So it looks like the children of Daniel Mahony of Dunloe Castle included:
John MAHONY, Dunloe Castle, married Honora HALY. Mentioned his “sister Lawlor” in a letter to John O’CONNELL. John was also grandfather of Margaret MAHONY who married John SHEA LAWLOR.
James MAHONY, The Point, married Jane HENNESSEY.
Dermod/Derby MAHONY born in 1718. Colonel in 1778. Uncle to James LAWLOR of Dublin. Had a son John Francis MAHONY who became a Count in France.
______ MAHONY married Donal O’DONOGHUE, and had a daughter Mary who married Daniel O’CONNELL, grandfather of his namesake, “Liberator”.
______ MAHONY married Dr. James LAWLOR of Killarney.
This Lawlor lot were well connected!