Justin and Kellen II were half-brothers born at around the same time, as the elder Winslow explained in an interview eight years ago:
My oldest son Justin is 15. Justin's mother and I went to college together, but we were never married. My Ex-wife Katrina and I had Kellen together. At a time when I was separated from Katrina, Justin's mother Dawn and I got together. Before I knew she was pregnant, I had gone back to Katrina and tried to work it out. Months later, I had found out that I was going to have two children within a matter of four months apart.
Justin Winslow was 23. No cause of death was reported. Kellen Winslow's Browns were off this weekend, and he hasn't spoken publicly since Justin died on Thursday.