If William Small's arrival in 1765 had been the catalyst to the development of the Lunar Circle as a cohesive group, his death – probably from malaria – in 1775 was to mark another change in its structure. Small had been the key link between the members, and in his absence those remaining moved to place the group on a more organised footing. Meetings were to be held on the Sunday nearest the full moon, lasting from two o'clock in the afternoon until eight o'clock in the evening. The first was probably that held on 31 December 1775, and the "Lunar" name is first recorded in 1776.