After the lead lost his beloved was it a hard time for him & got depressed. As long as he can remeber was it a female that always was intrested in him took her chance. Without thinking he made love with her & later he found out she was pregnant & he knew it was a mistake.
He told her too keep quiet about it & she agreed as long as he would come see her once a week at night. He nods & before he knew it a son was born. Short after the birth to his son, did he died of age & she raised him.
She would tell storys how great his father was & that he died because he protected the pack, the son would always see the father as a hero & never find out about the truth.