Origin av en avlidnes sedvaner som deltar i sina egna väckningar?

I den första boken i Amra Thetys-serien beskrivs en charmig lokal anpassning där den avlidne närmar sig sin egen begravningsbankett:

I was a little late. They’d already had the ceremonial meal and were cleaning up from that. Which was fine; as much as I cared for Corbin, he wasn’t smelling like a flower, and despite the careful makeup he looked like what he was- a corpse propped up in a comfy chair at the head of the funerary table. It reminded me of nothing so much as some sort of gruesome child’s tea party, but like I said, I’m not from Lucernis.
The Thief Who Pulled on Trouble's Braids - Chapter 16

Vad var inspirationen för den här anpassningen? Kommer det från författarens fantasi helt eller kanske är det baserat på historiska eller antropologiska register över liknande traditioner?