The couple settled in The Hague where Grotius made a swift career under the mentorship of Johan van Oldenbarnevelt, the Land's Advocate of Holland. In 1613 he was appointed pensionary of the city of Rotterdam with as main task the representation of that city in the States of Holland and West Friesland and the States General of the Netherlands. During this period their first seven children were born: Cornelia (26 April 1611) and Cornelis (2 February 1613) in The Hague; Pieter (24 February 1614; died 18 June 1614); another Pieter (28 March 1615), Françoise (17 August 1616; died 3 May 1617), Maria (16 April 1617), and Diederik (10 October 1618; a month and a half after Grotius' arrest) in Rotterdam[3]