Álvaro also worked hard to westernize Kongo, gradually introducing European style titles for his nobles, so that the Mwene Nsundi became the Duke of Nsundi; the Mwene Mbamba became the Duke of Mbamba. The Mwene Mpemba became Marquis of Mpemba, and the Mwene Soyo became Count of Soyo. He and his son Álvaro II Nimi a Nkanga (crowned in 1587) bestowed orders of chivalry called the Order of Christ. The capital was also renamed São Salvador or "Holy Savior" in Portuguese during this period. In 1596, Álvaro's emissaries to Rome persuaded the Pope to recognize São Salvador as the cathedral of a new diocese which would include Kongo and the Portuguese territory in Angola. However, the king of Portugal won the right to nominate the bishops to this see, which became a source of tension between the two countries.