sentences:  On 28 July 1910, Drees married Catharina Hent (6 May 1888 – 30 January 1974) and had two sons and two daughters,
  Both his sons Jan Drees and Willem Drees Jr. were active members of the Labour Party, but left the party around 1970 to join the Democratic Socialists '70.The cause was a row with younger party members who wanted to plot a more radical left-wing course for the party.Drees himself left the Labour Party in 1971 leaving them without their icon, but he never joined the Democratic Socialists '70.