Different names
Hi your family name has many different spelling . The name Ferns come from a very old Irish name call O'Reannachain, It was a mistranslation of O'Reannachain that gave you the name Ferns.Iam from the O'Reannachain clan, I will gave you the list of the different spelling of the name Ferns.
Ferns, Fearnley, O'Ferns, Ferrins, Ferrons, Fernie, Fernsty,Fernston, Fairens, Fairn, Fernes, Forns, MacFerns, Mc Fenns, McFearns, McFein, McFerins ,McFerns, Fierns, Firrins,
All these names have been use in Ireland from the 1600s' on.