Do you think that undertaker is an irish and he create bizarre dolls just to support the irish resistance against the british in case they invade them? Like he hates the quinn, the quinn and society view the irish as a rat in that time , vincent redaing finnian cycle( irish story ) to his kids, not to mention the famine that she caused and it will be stupid if yana didn't mention it , and finally if I am correct his store location is in east end ( many irish like joker and beast born there)
is he irish? maybe, i’ve never really thought about it. vincent reading the finnan cycle is an interesting clue, but i don’t think that’s where his hatred of the queen comes from, because it feels personal rather than aimed at the british as a whole or the monarchy in general. it makes more sense to me that he dislikes the queen because of the phantomhives being used as watchdogs overall, or because of a more direct, personal involvement in hurting one of them, considering he's obsessed with them.
but we also have to consider the timeline. undertaker deserted roughly 70 years earlier, around 1820, before queen victoria’s reign. we don’t know how long he was a grim reaper, but he had an impeccable reputation in his job, so we’re probably talking decades, if not centuries of experience. so there’s a high chance that when he was alive, ireland wasn’t even part of the united kingdom yet, which could also feed into his dislike, given centuries of growing conflict.
that said, it still feels too minor to be the actual core reason from a storytelling perspective. i do wonder if he might be cooperating with the french side in some way to act against the queen. not necessarily that he is french, but that his personal vendetta led him to seek allies among his enemy’s enemies.
i know there’s a theory that he’s japanese because he carries japanese wooden grave markers. maybe, maybe not. it could also just be symbolic or personal. in general, i’ve never really tried to dig into what nationality undertaker might be, because we might never actually find out, especially if it’s not important to the plot.