User blog comment:1seddiefan/Why don't the writers mention Sam and Freddie's dads?/@comment-2128395-20100902084519/@comment-2128395-20100902094730

No, but I point it out because usually when a child is born between a mother and a father, the child takes the father's last name. The fact that Freddie is named after his mother's maiden name means that his father was more than likely absent when he was born.