Carole Horst Kerry Condon earned her first Oscar nomination for Martin McDonagh’s “The Banshees of Inisherin,” in which she plays Siobhán, the complex sister of Colin Farrell’s simple Pádraic. Condon has worked with McDonagh for two decades; her first major role was in his play “The Lieutenant of Inishmore,” and in 2009, she starred in his drama “The Cripple of Inishmaan.” She also appeared in his film “Three Billboards Outside Ebbing, Missouri,” which won Academy Awards for Frances McDormand and Sam Rockwell. The actor, who hails from Thurles, Tipperary, Ireland, also shared that she shaved her head twice for McDonagh — once for “The Lieutenant of Inishmore” in London and four years later for the play’s New York premiere.