What is the origin of the idiom "marry money" and when to use it?

The phrase is thought to have originated in the 19th century, when it was used to describe wealthy women who married men for their money. The phrase is now used in a more general sense to describe any instance of someone marrying for money. It is considered to be a negative or disapproving phrase, and it is often used to describe someone who is considered to be materialistic or superficial.