James Sayer (17xx-1xxx) (brother) ; Mary Overton (17xx-1xxx) (sister-in-law) ;
France
map "Japan and Korea" (Paris 1790) ;
cartographer and map maker John Bennett (fl. 1770-1784) ; mathematician and amateur astronomer Samuel Dunn (17xx-1794) ; mezzotint engraver and publisher Robert Laurie (c. 1755–1836) ; James Whittle (17xx-1xxx) ;