You're in luck, I've got an altar to sell you! https://en.wikipedia.org/wiki/Human_sacrifice
Anyone else have better luck?
https://search.proquest.com/openview/963e53921cc804de/1?pq-o...
Scans:
https://dvpp.uvic.ca/poems/goodwords/1869/pom_1994_the_widow...
Either way, it does indeed seem an odd-yet-poetic practice.