Yohannes had discovered, Ras Mohammed was conspiring with the Turks the Ottoman empire because of his Muslim affiliation. Ras Mohammed was brought to Emperor Yohannes and was confronted of his conspiracy in helping the Muslim colonizer and to bring down the Judeo Christian empire. Ras Mohammed was siding with Muslim Affiliates of Turkey. After meeting with King Yohannes and in learning that if he were to assist the Turks, in the end, he and the rest of Ethiopia would become a slave to the Arab/Muslim world. Ras Mohammed then chose to become a Christian to later inherit a Christian name (later Negus) Mikael of Wollo, the Emperor stood as his godfather at his baptism. The new convert was given Menelik of Shewa's other daughter, Shewarega Menelik, as his wife. Yohannes went one step further and pressured Menelik to expel all of the Roman Catholic missionaries from Shewa. However this time, instead of a single Archbishop, he requested that Patriarch Cyril send four to serve the large number of Christians in Ethiopia, who arrived in 1881. They were led by Abuna Petros as Archbishop, Abuna Matewos for Shewa, Abuna Luqas for Gojjam and Abuna Markos for Gondar. Abuna Markos died shortly after arriving, so his diocese was included with that of Abuna Atnatewos. It was the first time that the Coptic Patriarch of Alexandria had appointed four Bishops for Ethiopia. War with Sudan When Muhammad Ahmad proclaimed himself the Mahdi (a prophesied Islamic leader who would precede the Day of Judgement), and incited Turkish Sudan into a long and violent revolt, his followers successfully drove part of the Egyptian garrisons out of Sudan and isolated the rest at Suakin and at various posts in the south. Yohannes agreed to British requests to allow these Egyptian soldiers to evacuate through his lands, with the understanding that the British Empire would then support his claims on important ports like Massawa on the Red Sea to import weapons and ammunition in the event that Egypt was forced to withdraw from them. This was formalized in a treaty signed with the British at Adwa known as the Hewett Treaty. According to the treaty, the Ethiopians would allow the Egyptians to safely evacuate out of certain cities such as Kassala, which aggravated the Mahdists even more. Ras Alula Engida defeated an invading Mahdist army at the Battle of Kufit on 23 September 1885. About the same