Ninian was a 4th or 5th-century Christian bishop and missionary known for converting the southern Pictish people in what is now Scotland. He is often called the Apostle to the Southern Picts and is traditionally associated with the establishment of an episcopal see at Whithorn. While historical details regarding his life are uncertain and subject to various scholarly interpretations, he remains a significant figure in early British Christianity, with his legacy tied to the site of the Candida Casa.