The titles descended to his son, Henry (1753-1836), the ancestor of the present Viscount Hood.
For his son Charles see Canterbury, 1St Viscount.
This led to an important despatch by Viscount Halifax, president of the board of control, to the marquess of Dalhousie, the governor-general, authorizing an educational advance in primary and secondary schools, the provision of technical and scientific teaching, and the establishment of schools for girls.
He took orders, and in 1682 went to Paris as chaplain to the ambassador Richard Graham, Viscount Preston (1648-1695).
In August St John, who had on the 7th of July been created Viscount Bolingbroke and Baron St John of Lydiard Tregoze, went to France to conduct negotiations, and signed an armistice between England and France for four months on the 19th.