I've just started a new game. Two of the original founders appear to be twins. They are both 21, wear the same design of dress and both have red hair. The were also both (rather unoriginally) named Ulu. Their hairstyles are different, though; one has an Alice band and the other a ponytail. Also, one has no special likes or dislikes, whereas the other likes medicine and playing.
I've renamed one of them to Ulu Two. I've got them both on farming at the moment; Ulu seems to learn much quicker than Ulu Two, who keeps giving up and saying "No".
_________________________
To err is human; to arr is pirate.