During the early Middle Ages , 700 -- 900 AD , many Irish religious figures went abroad to preach .
During the early Middle Ages , 700 -- 900 AD , many Irish religious figures found monasteries in what is known as the Hiberno - Scottish mission .
During the early Middle Ages , 700 -- 900 AD , many Irish religious figures went abroad to preach and found monasteries in what is known as the Hiberno - Scottish mission .