What is the source of the name on the Customer Check/Payment

Summary

User wants to add sponsors name to customer check

Content

We have a non-profit venture where we provide schools with an item for resale. The manager would like to add the schools sponsors name to the printed check along as part of the school name. Ex. **** High School - Jane Smith. I think the only way to do this would be add the sponsors as part of the customer name. Would anyone know of another way to add this?

Thank You