I've also calculated Total XP for the other NPCs. These numbers did not affect how much XP the PCs got from the encounter vs. the Undead Horde. If you guys want to see the breakdown, then take a look at the attached PDF.
Bothild: 16,835 XP (goes from 1st to 6th level)
Elle: 16,835 XP (goes from 1st to 6th level)
Ghal: 38,720 XP (goes from 8th to 9th level)
Henry: 38,720 XP (goes from 8th to 9th level)
Lady Pendour: 39,220 XP (goes from 8th to 9th level)
Scarborax: 34,016 XP (goes from ECL 7 to ECL 8 [might buy off his LA])
Temperance (if healed): 16,115 XP (goes from 2nd to 6th level)
Thorvid: 16,835 XP (goes from 1st to 6th level)
Tristan: 19,835 XP (goes from 3rd to 6th level)
Wieland: 32,013 XP (goes from 6th to 8th level)
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Ailward (gains XP as cohort): 17,979 XP (goes from 5th to 6th level)