Paul (1671-1739) and Isaac Vaillant (1679-1753) were the sons of François Vaillant, a refugee from Saumur. François had settled in 1686 in the Strand, London. Paul became a publisher and his son, also Paul (1716-1803) continued the family business. His daughter, Suzanne (1669-1749) married Nicholas Prevost (d. 1748) who also worked in the family bookshop.
Paul the younger married Theodosia Whichcote (1735-1827) in 1760. Their children were Letitia Vaillant (1770-1852) who married Lt Col William Hutchinson and Frances Vaillant (1776-1845) who died unmarried.