Who was a British suffragist and an early advocate of birth control in the United Kingdom, who died leaving  their son to be raised by his paternal grandparents ?
Frank Russell, 2nd Earl Russell John Francis Stanley Russell, 2nd Earl Russell, known as Frank Russell (12 August 1865 – 3 March 1931), was the elder surviving son of Viscount and Viscountess Amberley, and was raised by his paternal grandparents after his unconventional parents both died young. He was the grandson of the former prime minister John Russell, 1st Earl Russell and elder brother of the philosopher Bertrand Russell. He was married three times, lastly to Elizabeth von Arnim, who caricatured him in her novel "Vera". Despite his landmark achievements in other respects, this Earl Russell is most famous for being tried for bigamy in 1901, after which he was known to Edwardian society as the "Wicked Earl".
Lady Dorothy Macmillan Lady Dorothy Evelyn Macmillan, {'1': ", '2': ", '3': ", '4': "} ("née" Cavendish; 28 July 1900 – 21 May 1966) was a daughter of Victor Cavendish, 9th Duke of Devonshire and Evelyn Cavendish, Duchess of Devonshire and the wife of the British Prime Minister Harold Macmillan.