Am I the jerk for giving my dog an offensive name and then refusing to change it?

I have several dogs, one of which is an American Akita. His name is Yankee. I thought it was

funny and he seemed to like his name. My sister was in the States for the past two years and

recently flew home with her boyfriend and toe. First time we've met him, Yada Yada. I guess she

never mentioned me or my dogs, but he was pretty surprised when I told him my dog's name. I didn't

think much of it. Most of my pets have peculiar names, so I just assumed it was an overall reaction.

They left. My partner and I had dinner. Partway through our food, my sister called and asked if I'd

reconsider changing my dog's name. I kind of thought she was kidding, but she reiterated that

she was serious. The name Yankee had upset her boyfriend quite badly. He found it offensive.

I basically told her to piss off and tell him to grow up before going back to my food. The

following day, they literally showed up on my door. I was kind of taken aback. Apparently they

came to tell me why Yankee's name was so awful. During this discussion, he told me it essentially

is a slur used against Americans and asked if I would ever name a dog the N word. I just kind of

laughed and told him he was off his nut. It's not that serious. You can't equate the word Yankee

to something like the N word. I told him I wasn't going to change my dog's name. He knows it.

It'd be a ton of work. He's a personal protection, so it could even damage his work. They

thankfully left, but still seem pretty upset. Thinking back now, I'm pretty sure there's a company

with Yankee in the name. I wonder how many letters of complaints he sent to them. Anyway,

I did message my American friends just to make sure I wasn't being a total jerk. And they all

agreed he was being stupid. But I know the US is huge and it might be more of a regional thing.

So I'm still not sure. I'm starting to feel kind of jerkish for not taking him seriously when it

may be a genuine issue for him. So two birds one stone. I know a lot of Americans frequent this.

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