Nicholas was related to Thomas Spicer, the mayor of Dover in 1368-70 (to some of whose land in the hundred of Bewsborough he had succeeded by 1395), and probably also to John Spicer who sat for the Port in Richard II’s first Parliament.
In May 1411 Spicer shared in a bond in £200 made to the prince of Wales, then warden of the Cinque Ports, as arbiter on disputes among the townsmen of Dover. He is last recorded in 1421 when two Gascon merchants formally acknowledged in the town court that they owed him and others £8.
