Gan Singh is a mistake. I've checked the cite notes against the sources, and it looks as if when the new planets infobox was added to the article, the detail on the moons got copied across from the Westerhand article (both are from Handbook: House Liao, and would've been done at the same time).
Westerhand and Astrokaszy do seem to have the same moons. My guess would be that the names have some mythological, historical or pop culture significance.