wife Nonna Sangnio. Lange met Abu Bakar while she was in Singapore, and adopted the Muslim name of "Zubaidah" after her marriage to Abu Bakar in 1870. In 1885, Abu Bakar married a Chinese woman of Cantonese heritage, Wong Ah Gew, with whom he had a daughter, Tunku Azizah. Wong took on the Muslim name of "Fatimah" at her marriage to Abu Bakar, and was crowned the Sultanah in July 1886. Abu Bakar held Wong in very high esteem, who became Abu Bakar's confidant pertaining to his involvement in state affairs. Wong became a close friend of Abu Bakar's building contractor, Wong Ah Fook as they shared a common surname and dialect group. Wong died in 1891. During his state visit to the Ottoman Empire in September 1893, Abu Bakar married his fourth wife, Khadijah Khanum, who was of Circassian heritage. (Khadijah's sister, Rugayah, became the wife of Abu Bakar's brother and later the wife of the first Menteri Besar of Johor, Dato' Jaafar). He had a daughter, Tunku Fatimah with Khadijah the following February, who was later crowned as the Sultanah of Johor. Death In early May 1895, Abu Bakar travelled to London together with his son and successor, Tunku Ibrahim (later Sultan Ibrahim) with the hope to mustering support and recognition of his rule. He was by then already very ill and was already suffering from an inflammation of the kidneys for sometime and diagnosed with Bright's disease (a type of kidney disease). At the onstart of the voyage in early May, he became very weak, and had to be carried aboard a ship in a wheelchair. He reached London on 10 May, and checked into Bailey's Hotel but was bedridden throughout his remaining days. He was not allowed to receive many visitors, though the Duke of Connaught and Strathearn, Prince Arthur paid two visits. Queen Victoria sent her personal physician, Douglas Powell to attend to his medical needs upon receiving news of his illness. Abu Bakar contracted pneumonia during his stay in the hotel, which led to his demise on the evening of 4 June 1895. His body was then brought back to Johor by an English man-of-war from Penang. A state funeral was given to Abu Bakar, and he was laid to rest at the royal mausoleum at Makam Mahmoodiah on 7 September 1895. His son, Tunku Ibrahim was later installed as the Sultan of Johor