Hi again After Checking the Griffiths Registrations,No Diffey showed up in Tipperary.

The name exists ok But is Mainly Found in Northern ireland

 

Be aware that the name is spelled various ways -- Diffey, Diffy, Diffie, even Defi and Defie

 The Family Names of Ireland lists Devilly, Diffley and Devally, being the anglicized forms of O'Duibhghiolla, the name of 2 distinct septs of the southern Ui Fiachrach and of the Siol Anmchadha, both of County Galway. Diffley and Deffely are more usual in the adjoining County Roscommon.

 

I have now checked Most registrations i can find,None Marrying a Diffey

 

Mike