Landowners were interested in keeping all of their serfs and not losing workers to marriages on other estates. Prior to 1812 serfs were not allowed to marry serfs from other estates. After 1812 the rules relaxed slightly, but in order for a family to give their daughter to a husband in another estate they had to apply and present information to their landowner ahead of time. If a serf wanted to marry a widow, then emancipation and death certificates were to be handed over and investigated for authenticity by their owner before a marriage could take place.