Catholic funeral?

In Paul Turner's Blog by Paul Turner

Q:  Can an unbaptized person have a Catholic funeral?

A:  If that person is a catechumen, then yes. Otherwise, there’s no provision for it in canon law. See Canon 1183.

However, the Order of Christian Funerals includes a prayer for the funeral of an unbaptized person married to a Catholic: 398 / 36. There must be some circumstance for its use because it was approved by the Vatican.