The ride's concept is centered around the bride.
The bride is featured in the other versions of the ride, but isn't the main focus like she is in Phantom Manor. In fact, the entire premise of the ride in Paris revolves around her unfortunate wedding day. The whole backstory supposedly includes two brothers who owned Big Thunder Mine and built a mansion overlooking town. One of the brothers, Henry Ravenswood, had a lovely daughter named Melanie who he was extremely overprotective of. He forbade her to go into town or leave the house.
Bad luck ruined the estate in the following years: a earthquake crushed Henry, Melanie's mother passed from a weak heart, and close family friends continued to die off on the grounds, leaving Melanie alone. Finally, one day, when her love, Jake, convinced her to leave with him, Henry's angered spirit ruined the young couple's wedding day at the Manor. Jake was lured to the attic by a phantom and hung himself, making Melanie a widow bride and forever captive in her childhood home.
Pictured above is the section of the ride where Melanie is mourning in the attic on her wedding day. Though you don't see a hanging Jake, there's a light shining from the ceiling that suggests his death.