I hadn't thought about square screens because most are wider than tall. I guess you could replace the information found in the bottom of the screen normally with smaller information. The only things you really need easier access to would be age and health. and possibly a way to scroll through your villagers without going to the detains screen or individually clicking each one.

The name bar could be replaced with a color coded bar that would indicate health and lvl, (green would be healthy, red-sick, brown-elderly, dark green-weakened) with a text overlay of name and age. The left and right sides of this bar could house the arrows to scroll villagers. (You'd have to set the sort option in the details screen)