Most islanders are of either European-only (mostly British) or combined European-Tahitian ancestry, being descendants of the "Bounty" mutineers as well as more recent arrivals from Australia and New Zealand. About half of the islanders can trace their roots back to Pitcairn Island. This common heritage has led to a limited number of surnames among the Islanders – a limit constraining enough that the island's telephone directory also includes nicknames for many subscribers, such as Cane Toad, Dar Bizziebee, Lettuce Leaf, Goof, Paw Paw, Diddles, Rubber Duck, Carrots, and Tarzan. Population Population growth rate Nationality Citizenship (as of the 2011 census)  62% of the islanders are Christians. After the death of the first chaplain Rev G. H. Nobbs in 1884, a Methodist church was formed and in 1891 a Seventh-day Adventist congregation led by one of Nobbs' sons. Some unhappiness with G. H. Nobbs, the more organised and formal ritual of the Church of England service arising from the influence of the Melanesian Mission, decline in spirituality, the influence of visiting American whalers, literature sent by Christians overseas impressed by the Pitcairn story, and the adoption of Seventh-day Adventism by the descendants of the mutineers still on Pitcairn, all contributed to these developments. The Roman Catholic Church began work in 1957 and in the late 1990s a group left the former Methodist (then Uniting Church) and formed a charismatic fellowship. In 2011, 34% of the ordinary residents identified as Anglican, 13% as Uniting Church, 12% as Roman Catholic and 3% as Seventh-day Adventist. 9% were from other religions. 24% had no religion, and 7% did not indicate a religion. Typical ordinary congregations in any church do not exceed 30 local residents . The three older denominations have good facilities. Ministers are usually short-term visitors. Statistics:  Islanders speak both English and a creole language known as Norfuk, a blend of eighteenth century English and Tahitian. The Norfuk language is decreasing in popularity as more tourists come to the island and more young people leave for work and study reasons. However, efforts are being made to keep it alive via dictionaries and the renaming of some tourist attractions to their Norfuk equivalents. In 2004 an act of the Norfolk Island Assembly made it a co-official language of the island.