text: The marriage by proxy took place on 15 August 1725 in the cathedral of Strasbourg , Louis XV being represented by his cousin the Duke of OrlÃ ans , Louis le Pieux .
simplified: The marriage by proxy took place on 15 August 1725 in the cathedral of Strasbourg , Louis XV being represented by his cousin Louis d'Orl Ã ans , Duke of OrlÃ ans .