Question: Who is the wife of the actor of Grace's boyfriend in Frankie and Grace?

Knowledge 1: Grace and Frankie
Casting announcements began in June 2014, with Martin Sheen cast in the role of Robert, Grace's husband. The following month, Sam Waterston was cast in the role of Sol, Frankie's husband. June Diane Raphael and Baron Vaughn were then added to the cast, with Raphael cast in the role of Brianna, Grace and Robert's elder daughter, who rebels against Grace's decorum. Vaughn signed onto the role of Nwabudike, Frankie and Sol's son. Shortly afterwards, Ethan Embry and Brooklyn Decker were cast in the remaining roles on the series. Embry joined in the role of Coyote, Frankie and Sol's recovering drug addicted son, while Decker signed onto the role of Mallory, Grace and Robert's younger daughter. In October 2015, it was announced Sam Elliott would appear in the second season as Grace's love interest. In April 2017, it was reported that Lisa Kudrow will appear in the fourth season as Sheree, Grace's manicurist. In February 2018, the same day as the fifth season was commissioned, RuPaul was confirmed to appear in the fifth season as a rival of Grace and Frankie. [SEP] Knowledge 2: Murder in Texas
Murder in Texas is a 1981 television film starring Katharine Ross, Sam Elliott, Farrah Fawcett, and Andy Griffith. The film was directed by William Hale, and was based on a true story; that was written for the TV screen by John McGreevey. It first aired on television in two parts on Sunday and Monday May 3-4, 1981.
Knowledge 1: Grace and Frankie
Casting announcements began in June 2014, with Martin Sheen cast in the role of Robert, Grace's husband. The following month, Sam Waterston was cast in the role of Sol, Frankie's husband. June Diane Raphael and Baron Vaughn were then added to the cast, with Raphael cast in the role of Brianna, Grace and Robert's elder daughter, who rebels against Grace's decorum. Vaughn signed onto the role of Nwabudike, Frankie and Sol's son. Shortly afterwards, Ethan Embry and Brooklyn Decker were cast in the remaining roles on the series. Embry joined in the role of Coyote, Frankie and Sol's recovering drug addicted son, while Decker signed onto the role of Mallory, Grace and Robert's younger daughter. In October 2015, it was announced Sam Elliott would appear in the second season as Grace's love interest. In April 2017, it was reported that Lisa Kudrow will appear in the fourth season as Sheree, Grace's manicurist. In February 2018, the same day as the fifth season was commissioned, RuPaul was confirmed to appear in the fifth season as a rival of Grace and Frankie. [SEP] Knowledge 2: An American Girl: Grace Stirs Up Success
Olivia Rodrigo as Grace Thomas, who is nine years old and loves baking. Virginia Madsen as Mrs. Thomas, Grace's mother who is an elementary school teacher. Eloise Webb as Sylvie, Grace's French cousin. Caitlin Carmichael as Maddy, Grace's best friend who loves art. Notlim Taylor as Ella, Grace's best friend who is a math whiz. Rafael Edholm as Mr. Thomas, Grace's father who is a therapist. Krisztina Peremartoni as Grace's grandmother, who co-owns a bakery with her grandfather. András Bálint as Grace's grandfather, who co-owns a bakery with her grandmother. Fabrice Michel as Bernard, Grace's uncle who owns a pâtisserie in Paris. Lili Bordán as Sophie, Grace's maternal aunt who moved to France to study baking and married Bernard. Roxane Bret (fr) as Colette, Bernard's pastry intern. Thierry Harcourt as Jean - Luc Pernaud, owner of a Paris hotel where Bernard seeks to expand his clientele. Joe Bastianich as himself, one of the judges on MasterChef Junior Baking Edition. Tom Doherty as Josh, Grace's older brother. Maxime Leigh - Wood as Carter, one of Grace's competitors on MasterChef Junior Baking Edition.
Knowledge 1: Will & Grace
Will & Grace is an American sitcom created by Max Mutchnick and David Kohan. Set in New York City, the show focuses on the friendship between best friends Will Truman (Eric McCormack), a gay lawyer, and Grace Adler (Debra Messing), an interior designer. The show was broadcast on NBC from September 21, 1998, to May 18, 2006, for a total of eight seasons, and returned to NBC on September 28, 2017. "Will & Grace" has been one of the most successful television series with gay principal characters. [SEP] Knowledge 2: Pilot (Will & Grace)
"Pilot" (also known as "Love and Marriage") is the first episode of "Will & Grace"'s first season. It was written by David Kohan and Max Mutchnick, and directed by James Burrows. It originally aired on the National Broadcasting Company (NBC) in the United States on September 21, 1998. In the episode, Grace Adler receives an unexpected marriage proposal from her boyfriend. Her gay best friend Will Truman tries to support her, but finally tells her that she is making a big mistake, even though he risks losing their friendship. The situation gets complicated when Grace's socialite assistant, Karen Walker, and Will's flamboyantly gay friend, Jack McFarland, interfere.

Answer: Katharine Ross