Source: Schema.org v30.1 vocabulary. Official givenName property definition.
What does givenName mean?
Given name. In the U.S., the first name of a Person.
Used on types (domainIncludes)
Expected value types (rangeIncludes)
Schema.org domainIncludes and rangeIncludes are descriptive guidance, not strict validation prohibitions. Check the official reference for updates.
Related reference
Browse all Schema.org types and properties · Google feature support status