Existing law authorizes a court to issue a gun violence restraining order to prohibit a person from purchasing or possessing a firearm or ammunition for a period of one to 5 years, subject to renewal for additional one- to 5-year periods, if the subject of the petition poses a significant danger of self-harm or harm to another in the near future by having a firearm and the order is necessary to prevent personal injury to the subject of the petition or another. Existing law also allows a gun violence restraining order to be issued on an ex parte basis for up to 21 days. Existing law allows a petition for these gun violence restraining orders to be made by a law enforcement officer, or an immediate family member, employer, coworker, or teacher of the subject of the petition. This bill would additionally allow a petition for these gun violence restraining orders to be made by an individual who has a child in common with the subject, an individual who has a dating relationship with the subject, or a roommate of the subject of the petition, as specified. The bill would expand the family members who can file a petition to include any person related by consanguinity or affinity within the 4th degree who has had substantial and regular interactions with the subject for at least one year.