My sister wanted to name her D either Bianca, Margaritta or similar. Fortunately, she had all boys. She named her first a name we thought was unique but there is at least one other person with the same first and last name in our state. Her other two boys have the same last 4 letters in their first names.
Her BIL had twin boys and named them with the same last 4 letters in their 1st names. My sister was initially a bit irked but we tried to convince her it was a high compliment.
My name is misspelled all of the time, and I’ve stopped correcting people years ago, unless it’s for something where the spelling actually matters. My first and last name are both relatively common but are similar to a lot of other names (and my first name has a more common spelling that people usually go with). Both get misspelled in all sorts of ways (sometimes, in ways I never would have imagined), and I never give it a second thought (unless it’s a really funny way, and then I remember it for future examples of ways people have spelled my name =D). If it were me, I would let it go, and I usually just say something if it needs to be spelled correctly for some reason or if someone asks. But I also tend to be a pretty laid back person. I think if it’s something that’s really bothering you, then you should say something, but I don’t think it’s worth picking a fight over. There are much worse things in the world.
I was once given an award with a plaque that had my name spelled wrong. I never cared enough to tell them, and my parents still have it on display in their house. It’s a fun story when people actually notice that it’s spelled wrong =D
My BIL has been misspelling my name for several decades. As others said, email and Facebook has it correct, but still he misspells. My DH said something once to no avail. I finally said something because it was really starting to annoy me. We’ll see if it gets through his thick, self focused skull.
Not a surprise. I would’ve guessed “Backtracks” if I heard it.
Where I used to work, our email addresses were preferredfirstname.last_name@company and I was amazed at how many times I received an email from someone where they changed the spelling in the body of the email. Like: cathy.smith, then the email starts: Hi Kathi - why do they change it when you had to get it right for the email to go through?
We have an uncommon/hard to spell last name, and we gave our children very common first names. Frequently saw their names in school programs where they managed to spell the last name correctly, but got the first name wrong.
My son swims and frequently we end up buying championship tshirts with all the swimmers’ names listed on the shirt. He swims with someone whose last name seems to be a random jumble of consonants with a vowel or two thrown in to complete the name.
Our frustration comes when we turn in our order form, note the correct spelling of son’s first name and verbally ask nicely could you please take note of the correct spelling here? Fast forward a couple weeks, and we get our shirts back with the “Paulizskztsky” type name spelled correctly, but my son’s first name still gets butchered. Really?! You can manage all those consonants in the right order, but can’t type in “or” instead of “er” when it’s written out in front of you??!
The men who lead my son’s scout troop are great guys, wonderful leaders, but have consistently misspelled my son’s name for 5 years. I figure I will let it slide until it’s time to do all the official Eagle Scout award documentation, and then I will be all over them to get it spelled correctly.
@Marian, no, I’m just a poor typist when traveling and using my phone. The signature line in my “memo” was in error. 
To the OP, my advice would be to correct the person’s misspelling–but to pretend each time it happens that this is the first time.
Thanks everyone for the suggestions! I’m surprised by how many people just shrug off this kind of thing! It really bugs me when people I know misspell my name.
jym, your first name is one I always have to check for spelling - I know so many people with it and every single one of them spells it differently. I’ve been in an email loop with a bunch of women for over a decade and I’m always startled when one of them misspells it. I sign every single email with my name spelled correctly!
If people misspell my last name, I correct them but I realize it’s easy to do. My maiden name was really confusing, it was spelled weird but when pronounced it sounded like a common girls first name. So many teacher and people inadvertently called me by my last name instead of my first.
I can see being annoyed if my first name was being spelled wrong. Even if it’s Marc vs Mark or Sara vs Sarah. I always feel bad when I mix up Kristin and Kristen. OP I agree you are fine to be annoyed and to correct people.
I’m a decent speller. But… I know a lot of Kathy/Cathy and Kathleen/Cathleen… and honestly sometimes I can’t remember C vs K. Sometimes I even look it up in phonebook or online.
It took about 10 years to get my son’s school to fix the spelling of his name. It was misspelled in once place and it was 50/50 whether it would be spelled correctly…similar to say his name ended in or but they kept spelling it er.
My husband has a common first name similar to jonathon and goes by john. I cannot how many times people don’t understand it and come up with something completely kooky. He’ll say John and they’ll say ken? Kenathon? lol He’s stopped people before and said really? You think kenathon makes more sense than jonathon? Our first name is one syllable that seems to be very hard for people to understand.
People don’t tend to pay attention to detail or are terrible spellers. Unless it’s some kind of passive aggressive thing Id assume one of those things. I would correct them though in a non confrontational matter of fact way. Cathy with a C, not K - thanks.