The primary language spoken in house when he was a child Oklahoma?

It's impossible to say what language was spoken in a house in Oklahoma without knowing more information about the individual. Here's why:

* Diverse History: Oklahoma has a diverse population, with many different ethnic and cultural groups. This means there could have been a wide variety of languages spoken in homes across the state.

* Time Period: The language spoken in a house could change depending on the time period we're talking about.

* Specific Individual: We need more details about the person in question (their family background, the time period they were a child, etc.) to determine the language spoken.

To answer your question, we need more information about the individual.