No. They are not related.
Roy Keane is a former soccer player and currently manages the English Premier League club. He played for sixteen years. He was one of the best modern players.
He spent a stereotypical six month spell at Celtic, before he retired in June 2006. He currently manages Ipswich Town.
Roy Keane was born on August 10, 1971.
Roy Keane is from Republic of Ireland but may be staying in Manchester England.