Q. 1. Can a non-Catholic be proclaimed as a Saint?
A. 1. First of all, "sainthood" is bestowed upon a Catholic person who has been recognized as having lived a holy and virtuous life, the Church believing that he/she has gone to heaven after death. One of the purposes of canonization is to set forth Catholic models of Christian holiness. Such encourages the young and the old to live a holy and virtuous life so that they too may achieve this elevated level of spirituality.
As such, it is not the purpose of the Catholic Church to proclaim Saints among non-Catholics, nor to encourage Catholics to live as non-Catholics outside the Sacramental life that is only found within the Catholic Church.