Family relationship and marriage

Marriage is prohibited between close relatives for moral and physiological reasons. As a result, you cannot marry a person who is your:

• brother or sister;
• half-brother or half-sister;
• parent or child.

This rule applies to both biological and adoptive relatives.

However, you can marry certain other relatives, such as:

• your cousin;
• a person who is related to you by marriage only, such as the former spouse of your uncle or aunt, your former brother-in-law, or your former mother-in-law.