Adam Charles Clayton is an English-Irish musician who is the bass guitarist of the rock band U2. Born in Oxfordshire, England, he lived in County Dublin, Ireland after his family moved to Malahide in 1…Adam Charles Clayton is an English-Irish musician who is the bass guitarist of the rock band U2. Born in Oxfordshire, England, he lived in County Dublin, Ireland after his family moved to Malahide in 1965, when he was five years old. Clayton attended Mount Temple Comprehensive School, where he met schoolmates with whom he co-founded U2 in 1976. A member of the band since its inception, he has recorded 15 studio albums with U2.