Peasants should be able to populate the villagers without need for migration

Trying to put this as delicately as possible but peasants should be able to get married and have kids to boost the population without the need for migration. For me personally this would rlly make long term play through’s that bit easier. But obvs due to data storages sake don’t keep track of peasant family relations or keep family trees. Just give them the ability to marry and reproduction drive.