You aren't alone. I had 4 log cabin blocks left from a quilt I am hand quilting, so put them together, had it all hand quilted,bound,the whole works, like you did.
I had some darks where they should have been light. I was going to take it all apart and re-do it. Friends said to leave it alone; no one me would ever notice.
My friends were right; I have it hanging in the hall, and no one has said a word.
Iunderstand what you are saying,but bet the blocks that are wrong won't be as bad to those with the names as it is to you.
Maybe make 2 more blocks like you intended in the first place, and hand applique them to the back.
Mariah.