Christianity is a minority religion in Sri Lanka. Roman Catholicism was introduced by the Portuguese in 1505. There were conversions by Dutch persons in the 17th century, which resulted in a percentage of church members in excess of 10%. This figure decreased. The Christian population of Sri Lanka includes members of both the Sinhalese and Tamil ethnic groups.
6.1% of the population (1,237,038 persons) are Roman Catholic as per the 2012 census. Catholicism was first introduced by the Portuguese, who left a notable mark in the continued use of Portuguese surnames even today by many Catholics. Dutch missionaries tried to spread Protestantism after the Portuguese were expelled, however today most Sri Lankan Christians are Catholic. There is a Roman Catholic archbishop and 11 other Roman Catholic bishops. The other dioceses are: