Meanings of head of house in English

When next shipment came carrier delivered it in person to head of house.

Jerry soon finds himself uncomfortably acting as a surrogate father and head of house.

Bongi was head boy and Antony was head of house.

As the two young undergraduates strolled across Second Court toward the Master's lodgings, George asked Guy if he knew anything about their head of house.

She says that all heads of houses are relics of the dark ages.

Heads of houses, as mounted patrols, walked their horses round those poor cottages.

I shall distribute these to your teachers, heads of houses, and prefects within the hour.

Methinks the Head of House shall be the judge.

The heads of houses are united in the senate, and collectively constitute and govern the state.

To our trusty and well-beloved the heads of houses, doctors, and proctors of our University of Oxford:

She's started reading those books by your new Head of House, and she's totally jealous of you.

You are now head of House Nom.

The other portion of flesh he divided into as many shares as there were heads of houses present.

That explained why a Slytherin would use a name that even his Head of House thought was a joke.

"I wasn't Head of House for nothing," she added to the other two.

I just don't get why one of them would use a name that their own Head of House treats like a joke.