He also tried to maintain friendly relations with Native Americans. Soon Pennsylvania came to have a rich mix not simply of English Protestants, but also Scotch-Irish Presbyterians, Lutherans and the descendants of radical Reformation groups of mainland Europe who were fleeing from Roman Catholic intolerance in central Europe (see p. 647). Among the latter, the Old Order Amish from Switzerland have done their best ever since to freeze their communal way of life as it was when they first arrived in the early eighteenth century.28