These new wings created a three-sided courtyard and included a large dining hall, now known as the Huntingdon Suite.
A new house for the College Principal was built in about 1860 and this was extended in 1909.
The implication that the English, Irish, Scottish and Welsh have a great deal in common with each other, at least from the geneticist's point of view, is unlikely to please many desperate to maintain the distinction.
The genetic evidence is still under development, however, and because only very rough dates can be derived from it, it remains difficult to convincingly weave evidence from DNA, archaeology, history and linguistics into a coherent picture of British and Irish origins. Stephen Oppenheimer, a medical geneticist at the University of Oxford, simply believes the historians' account is wrong in almost every detail. Oppenheimer's reconstruction of events, the principal ancestors of today's British and Irish populations arrived from Spain about 16,000 years ago, speaking a language related to Basque. Oppenheimer believes no single group of invaders is responsible for more than 5% of the current gene pool. Heinrich Haerke suggest that the Anglo-Saxon invasions, beginning in the 4th century AD, added about 250,000 people to a British population of one to two million. Oppenheimer notes this figure is larger than his but considerably less than the substantial replacement of the British population assumed by others. Haerke has calculated that the Norman invasion of AD 1066 introduced not many more than 10,000 people. Oppenheimer's population history of the British Isles does not rely solely on genetic data but includes the dating of language changes by methods developed by geneticists.
Pryor argues that a flourishing indigenous culture endured through the Roman occupation of Britain and the so-called Dark Ages.
The centenary of the Trefeca Foundation was celebrated in 1868 by the launch of an appeal for funds to build a large extension to the College and by 1874 the building programme of 10,000 was completed and paid for.The first college was founded in 1768 by Selina, Dowager Countess of Huntingdon, at Trefeca, near Talgarth in Breconshire.On the death of the Countess in 1791, it was decided to move the College to "a convenient place near London" and eventually premises known as Churchgate House in Cheshunt were bought for 950.Despite their obvious proximity, Britain and Ireland are so thoroughly divided in their histories that there is actually no single word to refer to the inhabitants of both islands.Historians teach that they are mostly descended from different peoples: the Irish from the Celts, and the English from the Anglo-Saxons who invaded from northern Europe and drove the Celts to the country's western and northern fringes.