Hi Randall,
If I were to make a guess, assuming that two weeks ago you had no brood, no eggs, and no larvae, but now you have queen cells and some worker brood, I would guess that within the last two weeks your queenless hive was taken over by a swarm with an old and possibly failing queen. She laid eggs and the first priority for the workers was her replacement. When they had "enough" queen cells, the left the other eggs as worker brood. Just a quess!
If I were to make a guess, assuming that two weeks ago you had no brood, no eggs, and no larvae, but now you have queen cells and some worker brood, I would guess that within the last two weeks your queenless hive was taken over by a swarm with an old and possibly failing queen. She laid eggs and the first priority for the workers was her replacement. When they had "enough" queen cells, the left the other eggs as worker brood. Just a quess!