That this was already possible at the end of the seventeenth century was due to two developments. The first was a desire to learn more about Ireland itself as part of the general development of learning exemplified by the founding of such bodies as the Dublin Philosophical Society in Ireland and the Royal Society in London. Ulster landowners had been prominent in these intellectual developments. The Antrim landowner, Sir John Clotworthy, was one of the early fellows of the Royal Society, and Lord Clandeboy had even considered patronising the continental educational reformer, Comenius.15 In Co. Armagh, Arthur Brownlow, the owner of an estate around Lurgan, was conducting scientific experiments with fossilized wood in Lough Neagh and collecting manuscripts of local historical interest.16 William Montgomery was firmly in the same tradition. He was educated in Holland at Leyden, one of the most important continental centres of scientific learning. His own views on learning were distinctly practical, eschewing classical learning in favour of mathematics, medicine, physics, navigation, and merchandising although including more traditional subjects such as rhetoric, logic and oratory in the curriculum,17 Montgomery was also involved in the late seventeenth-century process of gathering information about Ireland. In 1683 he participated in assembling The Description of Ireland by William Molyneux and George Ussher for Moses Pitt’s Atlas, by writing a description of the barony of Ards which he later revised in 1701 for the Savage family.18
Moreover, to judge from the discourse given to the Duke of Ormonde on the history of Carrickfergus, William was conversant with the local history of east Ulster. He had also had an interest in the history of the family for some time. He described, for example, a conversation in 1690 with one Stephen Montgomery about ‘the family of Ards and Mount Alexander, of their descendants, their estates, titles and misfortunes’.19 It seems however, that no serious work was begun on the writing of the family history until after the burning of Rosemount in the mid-1690s in which much of the material which William might have used was destroyed.
The second development of the late seventeenth-century which made the writing of The Montgomery Manuscripts possible was a growing awareness of the distinctiveness of Irish society, among contemporaries. At its high point it was represented by what historians have described as the ‘colonial nationalists’: Molyneux, Swift, and King, who argued that Ireland, while sharing a common king, was not subject to the rule of the English Parliament.20 While certainly not in the forefront of this development, the Montgomeries were not isolated from it. Their links with Scotland had grown much weaker as a result of the sale of their lands there in the 1670s to pay for debts incurred during the Cromwellian period.