Dallison was a member of a junior branch of an ancient family from Laughton, Lincolnshire, which had settled at Greetwell, two miles east of Lincoln, in the 1560s. Though of limited landed estate, his father, a justice of Queen’s Bench who took a county seat in 1553, had important family connections among the principal gentry of the locality, including the Tyrwhitts, Monsons and Dightons.
Dallison was elected to Parliament for Malmesbury in March 1604 along with his courtier cousin, Sir Roger Dallison*. Both men owed their place to Sir Roger’s patron Thomas Howard, 1st earl of Suffolk, whose property at nearby Charlton Park gave him control of the borough. Dallison was named to seven bill committees, but is not recorded as having made any speeches. In the first session he was appointed to consider measures for draining the Fens (12 May), of interest to him as a Lincolnshire resident, and to confirm an exchange of property between his cousin, Sir Thomas Monson* and Trinity College, Cambridge (26 May). In addition Sir Roger, who owned a ferry on the Trent, had an interest in the bill for restricting the building of weirs on navigable rivers, to which Dallison was named on 23 June. His other appointments concerned the maintenance of arable farming (25 June) and Henry Butler’s estate (1 May).
Dallison had purchased Lincolnshire property in Burton-by-Lincoln, where his enclosures were demolished by rioters 1607,
Other than a date of death, nothing has been ascertained of Dallison’s later life, nor has a will or letters of administration been found. Both his elder sons became royalist colonels in the Civil War, for which they suffered: William had his estate at Greetwell plundered while Charles, a commissioner at Newark garrison who became recorder of Lincoln, was refused a pardon in 1649.
