Diffley

== English == === Etymology === Reduced Anglicized form of Irish Ó Duibhghiolla (“descendant of Duibhgiolla”), a personal name composed of the elements dubh (“black”) and giolla (“lad”). === Proper noun === Diffley (plural Diffleys) A surname from Irish. ==== Statistics ==== According to the 2010 United States Census, Diffley is the 39659th most common surname in the United States, belonging to 554 individuals. Diffley is most common among White (96.93%) individuals. === Further reading === Hanks, Patrick, editor (2003), “Diffley”, in Dictionary of American Family Names, volume 1, New York: Oxford University Press, →ISBN, page 460.