Any prospective marriage partner with a blood relationship outside these prohibited degrees was considered acceptable.

In the ninth century the church raised the number of prohibited degrees to seven and changed the method by which they were calculated.

The method of calculating prohibited degrees was changed also.

Finally, the Act specifically disallows marriages between prohibited degrees of relationships.

Two major examples of prohibited degrees are found in incest and nepotism.

The list authenticated that the prospective spouse was not within prohibited degrees of relationship.

Because Raymond was related to her within prohibited degrees, they were separated by ecclesiastical authority in 1165.

As they were related within the prohibited degrees, a Papal dispensation was required for their marriage.

In addition, Edward and Joan were within the prohibited degrees of consanguinity.

The council revised the prohibited degrees to extend as far as third cousins (common great-great-grandparents).

Since such a marriage would have been within prohibited degrees, it has been deduced that he was son of Agathe.

By the early 9th century the Western Church had increased the number of prohibited degrees of consanguinity from four to seven.

Colm McNamee stated that the marriage was deemed "as being within prohibited degrees of relationship".

This is always the case for minors below the age of puberty and for parties who fall within prohibited degrees of relationship.

The same prohibited degrees of consanguinuity and affinity apply as would apply under the Marriage Act.

Under ecclesiastical law, a marriage within the prohibited degrees was not absolutely void but it was voidable at the suit of any interested party.

There may arise conflict between the prohibited degrees based on this law and personal law, however in absence of any other laws it is still unresolved.

William and Judith's powerful dynastic connections created difficulties in finding suitable wives for his sons, however: too many potential spouses were related within prohibited degrees.

Soon after his succession, probably in 1058, Guiscard separated from his wife Alberada because they were related within the prohibited degrees.

Her marriage to Amalric was annulled in 1163 when it was discovered that the two were related within the prohibited degrees of consanguinity.

Observations on the Debate to make lawful Marriages within certain of the Prohibited Degrees of Affinity, 1854.

The Marriage (Prohibited Degrees of Relationship) Act 1986 also prohibits a marriage to the following:

The kingdom of Naples was in the hands of the old Ferdinand, whose birth was not only illegitimate, but probably also well within the prohibited degrees.

Under this third prohibition, therefore, a marriage between a stepson and his stepmother was void, but the Marriage (prohibited Degrees of Relationship) Act 1986 has provided an exception.

In 1215 the Fourth Lateran Council made what they believed was a necessary change to canon law reducing the number of prohibited degrees of consanguinity from seven back to four.