St. Columba of this country was martyred in 853 after telling some Moors that Muhammad was a false prophet
[DOC] [TLE] History of the Christian Church, Volume IV: Mediaeval Christianity ... [PAR] Nov 27, 2002 ... to particular countries and sections of church history will be noticed in the ...... 
Scottish observance of Easter by the authority of St. Columba and the apostle 
John.