Rules of Marriage

Men cannot marry:

Grandmother
Mother
Mothers sister
Mothers half-sister
Fathers sister
Fathers half-sister
Adoptive mother
Sister
Half-sister
Daughter
Adopted daughter
Sisters daughter
Half-sisters daughter
Brothers daughter
Half-brothers daughter
Granddaughter

Women cannot marry:

Grandfather
Father
Fathers brother
Fathers half-brother
Mothers brother
Mothers half-brother
Adoptive father
Brother
half-brother
Son
Adopted son
Sisters son
Half-sisters son
Brothers son
Half-brothers son
Grandson

Adopted children and their genetic parents and genetic grandparents may not marry. If they do, the marriage will be automatically void, even if they do not know they are related. Adopted children may not marry their adoptive parents but they are allowed to marry the rest of their adoptive family, including their adoptive brother or sister.

People who are step relations or in-laws may marry only in certain circumstances.

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