The BBC are reporting the amaing story of twins, who were seperated at birth, met when they were older and have got married.
A court annulled the UK couple's union after they discovered their true relationship, Lord Alton said.
The peer - who was told of the case by a High Court judge involved - said the twins felt an "inevitable attraction".
He said that they were adopted by separate families, and neither was told that they had a twin sibling.
Details of their identities have been kept secret, but Lord Alton said the pair did not realise they were related until after their marriage.