Who are ushers children?

"Ushers' children" is not a standard term or phrase with a specific meaning. It's likely you're thinking of something else or there's a misunderstanding.

To help me understand what you mean, could you please provide more context? For example:

* Where did you hear this phrase? (e.g., a book, a movie, a conversation)

* What was the context of the phrase? (e.g., were they being discussed in relation to a wedding, a church, a theater, etc.)

* What did you think the phrase meant?

With more information, I can better understand what you're asking and provide a helpful response.