Some of Paphs do branch. If I hadn't just boxed up all my plant books last night and hauled em out to the garage while I start my remodeling I could look up the twin volumes of the Genus Papheiopedilum and see if we can't at least take a wild stab at narrowing down one of the parents on the pink one. I'm making a wager that Paph. liemianum is at least one of the parents, check the blooms on google, quite similar.Google: Paph liemianum
If they didn't come marked as a species then they're most likely some hybrid and then it's "good luck solving this one Sherlock"! Especially that purple one. I've seen tables of these at my aunts garden center job all marked with different hybrid names but they looked 99% similar to me!