It is recorded in 1851 that the accent spoken in the northern parts of Northamptonshire would be more recognisable as a "West Country dialect". Scottish migration to Corby has created a unique population in the borough. The link with Scotland is a strong feature of the area: according to the 2001 Census, there were 10,063 Scottish-born in the Corby Urban Area – 18.9% of the population. A further 1.3 per cent were born in Northern Ireland. It has been estimated that a further third of the population are Scottish or of Scottish descent.