Julio César Chávez Jr.'s younger brother was born in what year?
Julio César Chávez Jr.:  He is the son of retired six-time world boxing champion Julio César Chávez and older brother of Omar Chávez. 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.
1990