This concession resulted in the Tobacco Protest of 1891 and is generally considered to mark the beginning of social unrest and clear Islamic clerical influence leading up to the Persian Constitutional Revolution in 1905. In 1901, as Kitabgi Khan was looking in Europe for capitalists who might be interested in investing in oil prospection in Iran, Wolff introduced him to Englishman William Knox D'Arcy, who had made a fortune in gold mines in Australia. On 28 May 1901, Mozaffar ad-Din Shah granted D'Arcy the first oil concession in Iran that later gave birth to British Petroleum. The deed of concession stipulated that Wolff would have 10% of the profits resulting from the venture. Personal life Wolff's only daughter, Lucas Cleeve, was a novelist. Her son Algernon Kingscote was a notable tennis player. Wolff's grandson Henry Maxence Cavendish Drummond Wolff was briefly the Conservative Member of Parliament for Basingstoke. He died at Brighton, one day before his 78th birthday. In popular culture Wolff was portrayed by Charles Lloyd-Pack in the 1974 Thames TV mini-series Jennie: Lady Randolph Churchill. Notes References External links 1830 births 1908 deaths Conservative Party (UK) MPs for English constituencies Knights Grand Cross of the Order of St Michael and St George Knights Grand Cross of the Order of the Bath UK MPs 1874–1880 UK MPs 1880–1885 People from Boscombe Members of the Privy Council of the United Kingdom British people of German-Jewish descent Jewish British politicians Ambassadors of the United Kingdom of Great Britain and Ireland to Spain