consanguinity
(Latin: con, with; sanguis, blood)
Blood-relationship, and a diriment impediment to matrimony if within certain degrees. It is of two kinds: relationship in the direct line, which means ancestry and descendants (parents, children, grandchildren, etc.), and for this kind of consanguinity no dispensation can be given; and in the collateral or sidewise line, in which no dispensation can be granted for the first degree (brother and sister), this being forbidden by the natural law. First cousins are of the second degree, second cousins of the third degree; and for these relationships dispensations may be granted.
Fuente: New Catholic Dictionary
Consanguinity
alliance by blood, as affinity (q.v.) is alliance by marriage. Certain degrees of consanguinity are among the impediments to marriage, both by the law of nature and by the revealed word of God. These degrees, as defined by the Church of England, are expressed in a table drawn up by archbishop Parker in 1563, and set forth by authority. This table is as follows:
A Table of Kindred and Affinity, wherein whosoever are related are forbidden in Scripture and our Laws to marry together.
A man may not marry his A woman may not marry with her
1 Grandmother;1 Grandfather,
2 Grandfather’s Wife,2 Grandmother’s Husband,
3 Wife’s Grandmother.3 Husband’s Grandfather.
4 Father’s Sister,4 Father’s Brother,
5 Mother’s Sister,5 Mother’s Brother,
6 Father’s Brother’s Wife.6 Father’s Sister’s Husband.
7 Mother’s Brother’s Wife,7 Mother’s Sister’s Husband,
8 Wife’s Father’s Sister,8 Husband’s Father’s Brother
9 Wife’s Mother’s Sister.9 Husband’s Mother’s Brother.
10 Mother,10 Father,
11 Step-mother,11 Step-father,
12 Wife’s Mother.12 Husband’s Father.
13 Daughter,13 Son,
14 Wife’s Daughter,14 Husband’s Son,
15 Son’s Wife.15 Daughter’s Husband.
16 Sister,16 Brother,
17 Wife’s Sister,17 Husband’s Brother,
18 Brother’s Wife.18 Sister’s Husband.
19 Son’s Daughter,19 Son’s Son,
20 Daughter’s Daughter,20 Daughter’s Son,
21 Son’s Son’s Wife.21 Son’s Daughter’s Husband.
22 Daughter’s Son’s Wife,22 Daughter’s Daughter’s Husband,
23 Wife’s Son’s Daughter,23 Husband’s Son’s Son,
24 Wife’s Daughter’s Daughter 24 Husband’s Daughter’s Son.
25 Brother’s Daughter25 Brother’s Son,
26 Sister’s Daughter,26 Sister’s Son,
27 Brother’s Son’s Wife.27 Brother’s Daughter’s Husband.
28 Sister’s Son’s Wife,28 Sister’s Daughter’s Husband,
29 Wife’s Brother’s Daughter,29 Husband’s Brother’s Son,
30 Wife’s Sister’s Daughter.30 Husband’s Sister’s Son.
SEE AFFINTITY.