Son of John and Mary Dewar. Elizabeth was the daughter of Jeremiah and Mary Cook. Had Augusta Lot 40 and Perth Lot Y30 in 1833. Married 27 November 1838 at Perth. Farmed with brother Robert at 'Coulston Farm' (Swan District). Moved to Greenough. Alexander died 30 April 1883 at Strawberry (Irwin district) and Elizabeth died 3 January 1892.