There are several synonyms for the phrase "celebrated marriage". The first one that comes to mind is "wedding of the century", which is often used to describe a high-profile wedding that has garnered a lot of media attention. Another popular synonym is "famous nuptials", which implies that the couple getting married are well-known or have a certain level of fame. "Grand union" is also a good alternative, as it suggests that the wedding was extravagant and luxurious. Other options include "lavish wedding", "marriage of note", "highly publicized wedding" and "union of the decade". Whatever synonym is used, it is clear that a celebrated marriage is a momentous occasion that is widely recognized and remembered by many.