On 30 December 1924 he married Henrietta Amelia née de Vos (b. 1905) at All Saints' Church, Galle. They had one son, Reginald Fredrick, born 10 June 1932.[2]
In 1953 following his retirement from the Civil Service he was appointed to the Senate of Ceylon[5][6] on 27 August and in 1956 he resigned from the Senate to take up a position as an appointed member of parliament. In 1958 he was selected to be a member on the Joint Select Committee on the Revision of the Constitution.[7] He was re-appointed as a member of parliament after both the March and July 1960 parliamentary elections.[8] Poulier served as Chairman of Public Accounts Committee[9] from 1960[10] to 1962.[11]