Peace Talks, Chapter 29, Page 278:
"Read your own laws, woman," Corb spat. "These hirelings were no members of a house, not vassals or lackeys. They're chattel at best." Corb turned to Marcone and with a contemptuous flick sent a velvet bag sailing through the air. It landed in front of Gard with an unmistakable metallic tinkle. "Your weregild, little man."
On 273 (Ch. 28) a bunch of valets, staff, and one security guard are gunned down by the Fomor.
Ch. 21:
The staff behind the buffet was an Einherjar.
Based on chapters 28 and 21, I thought the staff were Einherjar. If I had an e-book, I'd search "red jacket" "valet" and maybe "staff" if I was willing to have to skip all the references to a wizard's staff.
Ch. 19, on Einherjar:
Harry: "They don't mind dying. They've had practice."
Ebeneezer: "Consider them to be the most dangerous mortal warriors on the planet" ... "They are."