Image Credit: Sygma via Getty Images Erik and Lyle Menendez gained national attention for their 1993 trial, in which they were convicted of murdering their parents, José and Mary Louise "Kitty" Menendez on August 20, 1989. The brothers shot and killed their parents, claiming they had endured emotional and sexual abuse during their childhood. While incarcerated, both brothers have found love. For the younger sibling, his relationship has even led to fatherhood. Learn more about his stepdaughter and their relationship below. 6/12/99 Folsom, CA. EXCLUSIVE. Chris Morton/Online USA, Inc.