sentences:  Beaumont House was then transferred to the National Trust of South Australia by Bennet's widow, who had remarried, and her new partner on 24 August 1968.Originally a five-bedroom residence, the Beaumont House estate has been expanded greatly.Most of the structural expansion took place between 1907 and 1911, when Maj. Vincent owned it; it has not been expanded or notably altered at all since being donated to the National Trust.