You are apparently trying to edit an InDesign file provided to you by someone else. Why don't you ask the supplier of the document where they obtained those fonts from.
I did a similar internet search and I cannot find any font with that particular name. Maybe you dealing with a situation where someone modified one of the commercial Sabon fonts to better support diacritic marks and saved it with this new name.
There really isn't much more we can do to assist you here.
- Dov
- Dov Isaacs, former Adobe Principal Scientist (April 30, 1990 - May 30, 2021)