2006 – Mary Cheney (born March 14, 1969), lesbian daughter of former Vice President Dick Cheney, released her memoir My Turn in which she attempts to make sense of her inaction and silence during the Bush/Cheney administration and its anti-gay record. The book’s sales were miserable, prompting author Andrew Sullivan to write: “There are flops, almighty flops and then there are books by Mary Cheney.” Mary Cheney has been with her partner, Heather Poe, since 1992. Cheney is openly lesbian, has voiced support for same-sex marriage, and has been credited with encouraging her father’s approval of same-sex marriage, which he has publicly supported since leaving the vice presidency.
Source: https://ronnisanlo.com/today-in-lgbt-history-june-18-3/