"Ashburton, Baron (UK, 1835)". www.cracroftspeerage.co.uk. Heraldic Media Limited. Archived from the original on 30 December 2013. Retrieved 29 August 2019.
"Ashburton, Baron (UK, 1835)". www.cracroftspeerage.co.uk. Heraldic Media Limited. Archived from the original on 30 December 2013. Retrieved 29 August 2019.