ROME  The Vatican on Saturday welcomed the first group of traditionalist Anglicans who plan to convert to Roman Catholicism through a new structure the Vatican created to facilitate such group conversions.

The Vatican angered many Anglicans, including the Most Rev. Rowan Williams, the archbishop of Canterbury, when it announced the new structure in October 2009, because it appeared to upend decades of interfaith dialogue by implying that the Roman Catholic Church sought to encourage the conversion of Anglicans, especially those uncomfortable with the Church of England’s ordination of women and openly gay priests.

But tensions were somewhat eased with Pope Benedict XVI’s state visit to Britain in September, which was widely seen as a success.

In the first concrete result of the Vatican’s offer, the archbishop of Westminster, Vincent Nichols, presided Saturday over the conversions of three traditionalist Anglican bishops at Westminster Cathedral in London, the Vatican said in a statement.