Cillian Willis was born in Dublin, the Willis broke through into the Leinster team and signed a new contract with Connacht Rugby.
He was born in Dublin and educated at Blackrock College in Williamstown and University College Dublin, where in 2006 he completed a commerce degree with honours. Willis broke through into the Leinster team due to injuries to Chris Whittaker and Guy Easterby early on in the 2006/2007 season. In July 2010, Willis signed a new contract with Connacht Rugby and joined his new squad on their pre-season training trip on the Aran Islands. 
