Whilst I may be now beginning to sound like a broken record, to come at the same general poing from a different tack: When I see someone's nametag reads "Bob Wlodarczyk", I can ask them how to prounce that, I can have them explain structures/honourifics to me, and correct me when I'm wrong. In a book or similar, I've no indication beyond the spelling itself, and anything extra that which the writer gives me.