Fallon is an Irish surname and refers to the clan name Ó Fallamháin or Ó Fallúin. "Fallon" is also an Irish non-gender specific first name and means "Leader" or "granddaughter/grandson of a rich king."
Means "little wolf", derived from Gaelic fáel "wolf" combined with a diminutive suffix. This was the name of an Irish saint who did missionary work in Scotland.