 The life of the college was disrupted by the English Civil War . Leoline Jenkins , who became principal after the war in 1661 , put the college on a more stable financial footing . Little happened at the college during the 18th century , and the 19th century saw a decline in numbers and academic standards . Reforms of Oxford University after two Royal Commissions in the latter half of the 19th century led to removal of many of the restrictions placed on the college 's fellowships and scholarships , such that the college ceased to be predominantly full of Welsh students and academics . Students ' academic achievements rose in the early 20th century as fellows were appointed to teach in new subjects . Women were first admitted in 1974 and now form a large part of the undergraduate population . 
