The shaar blatt (page with the brief list of what's in the book) of my Shas (and this Shas) says that the Divrei Chamudos was originally called the Lechem Chamudos and the Maadanei Yom Tov was originally called the Maadanei Melech. Both were authored by the Tosfos Yom Tov, R' Yom Tov Lipmann Heller.
I am curious to know who changed the titles and why. Were they changed by the author himself, or by others?
For extra credit (brownie based, not reputation based), when did it happen?