Rev. Alban Butler (1711–73). Volume IV: April. The Lives of the Saints. 1866.
April 20St. Serf, or Servanus, Bishop
| HE was first bishop and apostle of the isles of Orkney, and disciple of St. Palladius, whose apostolic spirit he inherited. He flourished in the fifth century. See Lesley, l. 4; Hist. Scot. Arnoldus, in Theatro Conversionis Gentium. King, &c. | 1 |