The converts, at least the Catholics, had been taught they risked martyrdom. The secular press of the time described them as martyrs. The same description appeared also, of course, in religious publications, both Protestant, such as the journal of the missionary Mackay published in the
Intellegencer of 1886, and Catholic, such as the accounts of the missionaries Lourdel, Denoit, and Delmas published in
Enquête relative au martyre des chrétiens: Ste Marie de Rubaga, Buganda 1888 and
Les Missions Catholiques 18 (1886). This sentiment developed into a campaign for British intervention in the region. In September 1888, Mwanga planned to get rid of remaining Christian and Muslim leaders by leaving them to starve on an island in crocodile-infested Lake Victoria. Word of his plan leaked out and a rebellion by Christians and Muslims together brought Mwanga's brother
Kiweewa to the throne. In October 1888, the Muslims seized power, expelled the Christian leaders and, when Kiweewa refused to be circumcised, deposed and killed him, replacing him with another brother,
Kalema. In December 1888, Mwanga won support from Christians and in April 1889 advanced against the Buganda capital. He was defeated, but the Christian forces, led by the Protestant chief Apollo Kaggwa, retook the capital, enabling Mwanga to enter it triumphantly on 11 October 1889. The Muslims took refuge in the neighbouring kingdom of
Bunyoro, which helped them to return victoriously in November 1889, but they suffered a decisive defeat in February 1890 and withdrew again to Bunyoro. In 1888, British authorities authorized the
Imperial British East Africa Company (IBEAC) to administer the East African territory assigned to Britain in its 1886 treaty with Germany. In November 1889, Mwanga asked the company's agent Frederick Jackson for help. Jackson hesitated to accept the request, because he had been given orders not to enter Buganda.
Carl Peters, an agent of the corresponding German company, learning of Mwanga's appeal, decided to respond to it. He arrived at
Mengo, Mwanga's new capital, a fortnight after the February 1890 defeat of the Muslims. Since these still presented a threat, Mwanga accepted his offer of a treaty. Jackson then arrived and offered a treaty, which Mwanga rejected, since even the English missionaries considered its terms too onerous. With the aid of the Church Missionary Society, which used the deaths of their martyrs to win broad public support in Britain for acquiring Uganda, Lugard then successfully dissuaded Prime Minister
William Ewart Gladstone and his cabinet from abandoning Uganda. The powers of the IBEAC were transferred to the British Crown on 1 April 1893 and on 27 August 1894 Mwanga accepted Buganda being made a British protectorate. However, on 6 July 1897 he declared war on Britain. Defeated on 20 July in
Buddu (in today's
Masaka District), an area assigned to Catholics in the 1892 treaty, he again fled to
German East Africa. He was declared
deposed on 9 August. After a failed attempt to recover his kingdom, he was
exiled in 1899 to the
Seychelles, where he was received into the
Anglican Church. He died in 1903, aged 35. == Catholic Church veneration ==