I feel your pain...LOL FWIW, I have a space in my surname/last name/family name and for a while AA had a lot of problems with it. Not sure what they changed but now it shows on my status page and my various passports with the space (including in the machine readable section BTW) all work as do my DLs without it. Before about 18 months ago, sometimes certain IDs did not match at the ID scan. Again not sure what changed on the backend between AA and TSA systems but glad it did. The space still does not show on the boarding pass though.

As an aside, Italian's use apostrophes too; not as much as the Irish, but it is not uncommon for a D' or lesser extent L' in a surname. Other countries also such as France, but after Ireland I think Italy has the most apostrophes.

Texas always frustrated me as they do not use spaces or "special characters" on DLs and such. My friend whose last name is de la Garza shows Delagarza on the DL for example.

Spaces, hyphens, apostrophes, accent marks, tildes, umlauts, etc. seem to throw airline IT for a loop, even though passports normally do have the full name with the proper full spelling. One would think post Y2K and such it would not be an issue, but it still trips up IT systems and things sometimes.