The Spedding family had strong links to a number of poets, including William Wordsworth, Lord Alfred Tennyson and Robert Southey as well as Thomas Carlyle and John Constable, some of whom stayed at Mirehouse.
The Home Office Baby was an 1884 publicity stunt perpetrated by the Rev. J. Mirehouse, the eccentric rector of Colsterworth, Lincolnshire, England.
Besides keeping local authority and quarter sessions records, together with many Pembrokeshire parish registers, other significant holdings include family and estate papers relating to John Mirehouse of Angle, Carew of Carew Court and Lort-Phillips of Lawrenny.