While serving as chargé d'affaires in Athens, he met and married Elisabeth Tschumi, a
Swiss woman working as a governess to the children of another diplomat, daughter of Jacob Tschumi. She changed her name to Afife following their wedding, but she chose to stay Protestant. However, a few days before Elisabeth's death in 1949, she decided to be buried next to her husband as a Muslim. They had five children together. According to his grandson Şefik Okday, Tevfik Oktay's first two children,
İsmail Hakkı Pasha and Ali Nuri Bey (father of Şefik), were secretly baptized. A daughter, Zehra Hanım, married Mazlum Bey, the son of Minister of Internal Affairs Memduh Pasha. Naile and Gülşinas died young. Ali Nuri Bey married Edibe (Ayaşlı) Hanım, the granddaughter of
Sadullah Pasha, whom he met during Tevfik Pasha's tenure as Ambassador to Berlin. Their wedding was the first to be gender integrated in the Ottoman Empire. İsmail Hakkı Pasha first married
Ulviye Sultan, daughter of the Sultan Mehmed VI, making him a
Damat, or imperial in-law. This made İsmail Hakkı Pasha a son of a grand vizier and son-in-law of the Sultan. He was one of the first officers to answer calls of resistance during the
Turkish War of Independence. An apocryphal story has the officer of the imperial family meeting
Mustafa Kemal Atatürk, whereupon the renegade asked him, "What news did you bring from your father and the sultan?", İsmail Hakkı Pasha answered "[that] I came to fight." Tevfik Pasha, informed of his son's escapade by the angered sultan replied, "he went to fulfill his duty". Mehmed VI enacted a divorce on the couple. Following the Sultan's exile, İsmail Hakkı Pasha remarried with Ferhunde Hanım, the great-aunt of Prime Minister
Bülent Ecevit. ==See also==