Setting reference that applies both to the manatear and stormbreak, the wider setting.
The moons having their own associations and superstitions, sure silver for the closest one not being too different from our real life moon, but sometimes why make something different for the sake of making something different?
In the beast barony, people being so uselessly moondrunk isn't too common, but there are moon moon level disasters who don't get any high stake "Can't take a break" style work. Like no moon-moon's in covert ops, but there can totally be doctors that just don't do work during the triple full moon.