An exceptional second half performance helped St Mary's of Cahirciveen claim the All-Ireland junior club championship crown at Croke Park on Saturday.

Kerry senior forward Bryan Sheehan scored 1-7 as the Kingdom kingpins eased to a 14-point victory over Cavan and Ulster champions Swanlinbar.

The sides were level at the break, with Mark Cunningham's first half goal for Swad leaving it 1-4 to 0-7 at the change of ends.

But Mary's were in irresistible form after the interval, outscoring their opponents by 3-6 to 0-1 over the half hour.

Sean Cournane scored two goals and Sheehan added a third as Mary's emulated their fellow Kerrymen from Castlegregory and Skellig Rangers, who won All-Ireland junior titles in 2009 and 2010.