Murchadh O'Brien
Murchadh was born in 1550.  He died at the age of 23 on April 20th, 1573.

 Margaret Cusack
Margaret was born about 1552.

 Murchadh O'Brien
Murchadh was born about 1572.  He died on July 29th, 1597 in Ireland.  He was buried in Donegal Abbey, Ireland.