How to address save the dates for three people?

Maybe put the moms name and just add "and family" after it? I had the same issue for mine. I basically put

First name last name & first name
Child's nameAddress

Is her younger brother over 18? If so, he should get his own save the date. Otherwise, you would address it to

Ms. Mom First and Mr. Boyfriend Last

Brother First Last

I agree with Caytlyn. Anyone over the age of 18 should receive a separate invitation so if the son is 18 or older then he should receive his one. Otherwise, I would do it the way Caytlyn has it laid out.

View Quoted Comment He is over 18, but they all live under the same household, and also he also has cerebral palsy so I wasn’t sure if I should just send one.

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He's an adult. I don't think it's fair to treat him differently because of a disability.

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We had a couple of households where one of the children of the family was over 18 and we didn't send them a separate invitation. It just seemed silly to send one for the mom, dad, and younger brother (16) and then older sister (18) gets her own invitation? They all share the same address, same house, same refrigerator where the invitation is hanging, I really don't think it's necessary to send them their own invitation. The only reason I would've sent them their own invitation is if I was also inviting their SO that doesn't live there.

I would just send one and address it to the mother's last name "family". Then on the actual invitation you can list out the names on the inside.

I don’t know, my brother is 29 but he still lives with our parents. He’s not getting his own save the date or invitation because that’s an enormous waste of paper and money. I’m not one to care that much about “proper etiquette” though. But there are enough trees being cut down and wasted without my help.

View Quoted Comment Not trying to make it about that. So don’t.

Honestly, I would just address it with their first names, ie: “Jane, William, and Robert”
I would never get offended receiving a save the date, or anything for that matter, addressed that way.
Sending the young man a separate invite isn’t necessary because it’s one household.

We had this where multiple people are living under the same household and they only wanted one STD for the whole family so that they didn't get 5 of them lol. It was for FH's dad & step mom & step siblings so we put:

"Fh's/Step Mom Last Name" & "Step Siblings Last Name" Family

I would put the mother's name and add "and family" to it. You can also give your best friend a heads up that everyone in the house is invited, that way she can let them know if there happens to be any confusion.

As for sending multiple save the dates to different adults living in the same house... I personally think it is a bit dumb and a waste of paper. Save the dates aren't even necessary for proper wedding etiquette, they are a curtsy. Unless it is a true black or white tie affair, I see nothing wrong with sending one for the family.

I had one of these where I just listed all 3 names. In my case, I dont think they would have realized the boyfriend is definitely invited if he didnt have his name listed. But I do like a previous poster's idea of listing the 3 first names if you're worried about physical space on the envelope. I had my addresses printed on by the site I ordered from and the names did go on to a 2nd line, but still fit

I had this situation slightly with my niece. She lives with her FH (but won't take his name until their wedding in November, and their kids (one has a different last name). So, even though I'm sure it wasn't proper, I put The B-last name/G-last name Family. She's my niece. She won't get offended. Plus she's starting to have some of the same issues, planning her own wedding for later this year.

It's great if you want to learn what is considered "proper etiquette" for these kinds of things. But also remember that at the end of the day, as long as your guest understand who is invited to your special day, that's all that matters. I love proper etiquette, but don't drive yourself crazy over it. Makes for happier planning.