David Quidnunc • Link
Montagu's "man of business"
and a lawyer at Gray's Inn.
Moore is a friend that Pepys sees often, both on business for Montagu and for Pepys, and socially at coffee houses and taverns, and at Pepys's home.
Source: Robert Latham's index volume (11) to the Latham & Matthews edition of Pepys's Diary.