'merchant' is an out-dated term for 'seller'.

A member of a music group—for example, John, Paul, George, or Ringo.

A parents of the person.

The main performer or performers of the event—for example, a presenter, musician, or actor.

A sibling of the person.

'vendor' is an earlier term for 'seller'.

A pointer to the organization or person making the offer.

A person or organization that supports (sponsors) something through some kind of financial contribution.

A person who reads (performs) the audiobook.

An agent associated with the publication event.

The primary artist for a work in a medium other than pencils or digital line art--for example, if the primary artwork is done in watercolors or digital paints.

The individual who adds color to inked drawings.

The individual who traces over the pencil drawings in ink after pencils are complete.

The individual who adds lettering, including speech balloons and sound effects, to artwork.

The individual who draws the primary narrative artwork.

A person assigned to instruct or provide instructional assistance for the [CourseInstance](https://schema.org/CourseInstance).

The (e.g. fictional) character, Person or Organization to whom the quotation is attributed within the containing CreativeWork.

A sub property of recipient. The recipient blind copied on a message.

A sub property of recipient. The recipient copied on a message.

A sub property of recipient. The recipient who was directly sent the message.

The person or organization that originally passed or made the law: typically parliament (for primary legislation) or government (for secondary legislation). This indicates the "legal author" of the law, as opposed to its physical author.

An individual or organization that has some kind of responsibility for the legislation. Typically the ministry who is/was in charge of elaborating the legislation, or the adressee for potential questions about the legislation once it is published.

Indicates the party responsible for generating and publishing the current structured data markup, typically in cases where the structured data is derived automatically from existing published content but published on a different site. For example, student projects and open data initiatives often re-publish existing content with more explicitly structured metadata. The [sdPublisher](https://schema.org/sdPublisher) property helps make such practices more explicit.

Indicates something directly or indirectly funded or sponsored through a [Grant](https://schema.org/Grant). See also [ownershipFundingInfo](https://schema.org/ownershipFundingInfo).