Article — Noldin, Summa of Moral Theology
Article Four. On Those Who Are Held by This Form.
651. 1. The following are held:
a. Catholics about to marry, whenever they enter matrimony with each other. By Catholics are understood all baptized in the Catholic Church and those converted to it from heresy or schism, although either these or those afterward defected from it.
b. Catholics, if they contract with acatholics, whether baptized or not baptized, even after dispensation has been obtained from the impediment of mixed religion or disparity of cult.
c. Orientals who contract with Latins are held by this form.
- The following are not held, or contract validly without any form:
a. Catholics of Eastern rites, whether they enter matrimony with each other or with any acatholic (Eastern or Latin).
b. Acatholics who enter matrimony with each other. By acatholics are understood a. those who never belonged to the Catholic Church either through baptism in the Catholic Church or through conversion to the Catholic Church; b. those who, born of acatholics, although baptized in the Catholic Church, from infancy grew up in heresy or schism or infidelity or without any religion.2
1 Cn. 1099.
2 Cn. 1099, 3.