Back in the 1800's or early 1900's some of what we call oxblood now would likely have been called other things based on the up close and personal knowledge which people of that era had with the blood of various animals.
The French name for oxblood ceramic glaze was "sang de boeuf". Other glaze names were sang de poulet and sang de pigeon (chicken blood and pigeon blood). And then there were less gory names like peach bloom, crushed strawberry, crimson and liver.
I looked those up a long time ago and don't remember my sources now but I think those names were all given to different copper-based colors --- the spectrum of what we now might lump under the name oxblood.