TW: Blood, death, generally messed-up-ness on Philip's part.
Finally did the, well, the less goofy comic that I was planning to finish, haha.
So I remembered that cremation was not a common practice back in the day as it would hinder the body from being "resurrected" on judgment day (it's some very weird Christian belief, no clue about Puritans, though). And while it would make sense for Philip to choose for his brother's body to burn as some form of punishment for his betrayal (and also kinda parallel the witch burnings during the middle ages or the purification process of purgatory) it would also make sense to save the body from the fire. Y'know. Not accidentally damaging the ingredients for a potential grimwalker. Or he just actually wanted to give his brother a proper burial (maybe he didn't know about grimwalkers yet, idk).
Though Philip would really need to hope that wittewife won't show up soon enough to kick his ass. Hiding a body takes some time after all, giving wittewife all the time needed to catch up to them.