I do not know why such as an experienced player like Makatas is telling you such a newbie mistake... well... anyone can be wrong sometimes
There is no possible way in the game to move villagers from a province to another. If you want to increase your population you have to develop the medicine and the graneries but you can not just "move" the people from one place to another. You can conquer with soldiers new provinces but you can not move villagers.
You can find the post with this information in the FAQ in this link:
http://www4.imperiaonline.org/forums/int/index.php?topic=9.0