Now have to sit back and wait to see how things progress :
a)The hive from where the swarm departed should soon have a new queen hatching out - hopefully, if this happens, and she has a succesful mating flight and gets back to the hive in one piece, she will start laying and that hive will prosper
b) In the new hive where I transfered the swarming bees, if I didn't squish the queen in the various processes, and they survive with the sirop food I've given them, collect pollen and nectar, build up the frames and decide to stay put, that should also develop into a healthy hive.
3 hives potentially with queens from 2014, 2015 & 2016 !
Nothing else I can do now but wait and see what happens !