Twins, Unaware of Relationship, Marry in England

Earlier on this blog, I reported on the proposal to develop a registry of reproductive material donors.  Another reason for such a registry, is to prevent brothers and sisters from marrying each other before they realize their biological relationship.

The problem is also a concern in adoption situations.  As recently reported in Unknowing twins marry each other, CNN.com, Jan. 11, 2008, two British twins who were separated at birth, grew up apart, fell in love, and married.  It was not until later that they discovered they were related and the marriage annulled.  The article does not reveal how long they were together before discovering the truth.