Born in Celbridge, County Kildare, Mackey first arrived on the inter-county scene when he first linked up with the Kildare minor team, before later lining out with the under-21 side.
Mackey was born in Celbridge. Mackey first arrived on the inter-county scene. He first linked up with the Kildare minor team. This was before later lining out with the under-21 side. Celbridge was County Kildare.