 A grandson of Jehan, the merchant Lawrence de Bouverie, born in Sainghin, migrated to England, where his descendant William des Bouverie became the ancestor of the Earls of Radnor, of Longford Castle.Jan des Bouvrie hoped to meet the present-day William Pleydell-Bouverie, 9th Earl of Radnor, but was unsuccessful, as Lord Radnor would not agree to meet him.His wife is interior designer Monique des Bouvrie, with whom he has two children.