Question: Julio César Chávez Jr.'s younger brother was born in what year?

Context paragraphs:
Estefanía: Estefanía is a popular Venezuelan telenovela that was produced by and broadcast on Venezuela's Radio Caracas Televisión in 1979.  The story idea was conceived by Julio César Marmol and Humberto (Kiko) Olivieri and the plot was based on the government of Marcos Pérez Jiménez.  Pierina España and José Luis Rodríguez starred as the main protagonists with Gustavo Rodríguez as the main antagonist.  The telenovela was written by and Julio César Marmol, and directed by César Bolívar and Julio César Marmol, the series lasted 208 episodes.  It was distributed internationally by Coral International.

John Duddy: John Francis Duddy (born 19 June 1979) is an Irish actor and former professional boxer who fought from 2003 to 2010.  He challenged once for the vacant WBC Silver middleweight title, losing in his final fight to Julio César Chávez Jr.

Julio César Chávez vs. Meldrick Taylor: The world championship bout held on March 17, 1990 between WBC world champion Julio César Chávez of Mexico and IBF world champion Meldrick Taylor of the United States, both at light welterweight, was a historic event in professional boxing.  It was titled "Thunder Meets Lightning" as an allusion to the punching power of Chávez and fast handspeed of Taylor.  The fight was expected to be a rousing and exciting one but few, if any, could have foreseen the intense action it would produce, or the lasting fame it would earn in boxing history due to its dramatic and controversial ending that continues to be widely debated to this day.  It would later be named "The Ring" magazine's Fight of the Year for 1990, and later the "Fight of the Decade" for the 1990s.

Omar Chávez: Omar Alonzo Chávez Carrasco (born January 4, 1990), best known as Omar Chávez, is a Mexican professional boxer and the current WBC Youth Intercontinental welterweight champion.

Julio César Chávez: Julio César Chávez González (] ; born July 12, 1962), also known as Julio César Chávez Sr., is a Mexican former professional boxer who competed from 1980 to 2005.  He is considered by acclamation as the greatest Mexican boxer of all time, and one of the greatest boxers of all time.

Freddie Roach (boxing): Frederick Steven "Freddie" Roach (born March 5, 1960) is an American boxing trainer and former professional boxer.  Roach is widely regarded as one of the best boxing trainers of all time.  He is the enduring boxing coach of the eight-division world champion Manny Pacquiao, five-time and four-division World Champion Miguel Cotto, former WBC Middleweight Champion Julio César Chávez, Jr., defensive master and three-time world champion James Toney, former UFC Welterweight Champion Georges St-Pierre, as well as top prospects Jose Benavidez, Peter Quillin, and Vanes Martirosyan.  Roach was the trainer of former two-time world champion and notable women's champion Lucia Rijker.  He has also trained former junior welterweight champion Amir Khan.

Julio César Chávez Jr. vs. Sebastian Zbik: Julio César Chávez Jr. vs. Sebastian Zbik was a Middleweight championship fight for the WBC Middleweight Championship.  It has been the first time that the son of legendary boxing Champion Julio César Chávez, fought for a world title, Chávez went on to become the new WBC Middleweight Champion.  The bout was on June 4th, 2011, at Staples Center, in Los Angeles, California and was broadcast on HBO.

Armando Hernández (actor): Armando Hernández (born September 27, 1984) is a Mexican television and film actor.  He is well known for his main role in "El César" as Julio César Chávez.

Julio César Chávez Jr.: Julio César Chávez Carrasco (born February 16, 1986), best known as Julio César Chávez Jr., is a Mexican professional boxer who held the WBC middleweight title from 2011 to 2012.  He is the son of retired six-time world boxing champion Julio César Chávez and older brother of Omar Chávez.

César Chávez (film): César Chávez is a 2014 Mexican-American biographical film produced and directed by Diego Luna about the life of American labor leader César Chávez, who cofounded the United Farm Workers.  The film stars Michael Peña as Chávez.  John Malkovich co-stars as the owner of a large industrial grape farm who leads the opposition to Chávez's organizing efforts.  It premiered in the Berlinale Special Galas section of the 64th Berlin International Film Festival.

Supporting paragraphs: Julio César Chávez Jr. Omar Chávez
Answer: 1990