Professor of Scottish History and Literature University of Oxford. In 1929, Rait was appointed Principal of the University. He remained in post as professor for a year, publishing a "History of the Union Bank of Scotland" in 1930, but resigned later that year, succeeded by John Duncan Mackie, previously Professor of Modern History at Bedford College (predecessor institution of Royal Holloway), who had initiated the teaching of Scottish History at the University of St Andrews on being appointed a lecturer there at only twenty-two years old. His publications whilst in the chair included "Andrew Lang and the House of Stuart" (1935) and "The Earlier Tudors 1485-1558"
Tudors of Penmynydd the Great and later his son Dafydd ap Llywelyn. He claimed descent from Marchudd ap Cynan, Lord of Rhos and 'protector' of Rhodri the Great, king of Gwynedd, a founder of one of the so-called Fifteen Tribes of Wales. From Ednyfed's many sons would come a 'ministerial aristocracy' in northern Wales. He left the manors of Trecastell, Penmynydd and Erddreiniogin, Anglesey to those of his sons born to his second marriage to Gwenllian, daughter of king Rhys ap Gruffydd of Deheubarth, and among these sons was Goronwy (died 1268), founder of the line of the Tudors of Penmynyth. Goronwy served