Catholic Activity: Portuguese Names
The Portuguese take the duty of giving their children Christian names very seriously.
The religious consciousness of parents in the upbringing of their children is quite manifest even from the selecting of their baptismal names. In this regard parents have, as a rule, remained faithful to the spirit of the Church, applying to their children names of Catholic tradition. Out of devotion to the Blessed Virgin, in many families the name of "Mary" is affixed to the name of all the girls.
Activity Source: Your Home, A Church in Miniature by Compiled by The Family Life Bureau in the early 1950s, The Neumann Press, Long Prairie, Minnesota, 1994