So, as the title states, My villagers keep despawning (not dying at all, I have about 12 iron golems, plus me protecting the village at night), but the village is untouched, my home is just outside, and villagers still claimed my bed, so, pretty much, the beds were in the village, but the house wasn't (if that makes sense). 

they have over 30 beds, 15 houses to choose from (I put 2 in each, so, lightly touched), and a little home for their workstations (3 spawned in one for some reason, ah well, probably just world gen), and i have revived over 13 villagers in one night, all who despawned the following day. Only one villager remains, who refuses to get any jobs. he isn't a nitwit either. Please help