Mary Cheney
Mary Claire Cheney (born March 14, 1969) is the second daughter of Dick Cheney, the former Vice President of the United States, and his wife, Lynne Cheney. She is politically conservative and is involved with a number of political action groups. She is openly lesbian, has voiced support for same-sex marriage, and has been credited with encouraging her father to support same-sex marriage. In 2013, she was a signatory to an amicus curiae brief submitted to the U.S. Supreme Court in support of same-sex marriage during the Hollingsworth v. Perry case.