I am a "Ladden" whose relatives are from Castlemaine, in County Kerry. From Ireland, John and Mary (Holleran) Ladden (my Grandparents) emigrated to Connecticut. They had quite a few children: Bernard, John, Francis, Thomas (my dad), Raymond, Helen, Mary, and Gertrude. I'd say my Grandparents came over to the US in the late 1800's. As their first child, Bernard was born in 1902 and their last, my father, Thomas was born in 1916.
If there are any other Laddens who would like to correspond, please feel free to contact me.