Simplify the following text for a Grade 7 native English-speaking person.
Original: Heaney was born on 13 April 1939 at the family farmhouse called Mossbawn , between Castledawson and Toomebridge in Northern Ireland ; he was the first of nine children .
Simplified: Heaney was born on 13 April 1939 at the family farmhouse called Mossbawn , in Northern Ireland .