His father had a scar to prove he'd faced death and lived, but Albus would only have the story from his parents about his first heroic struggle with death.
After sixteen hours of labour, he'd fought his way into the world, breach, with the umbilical cord wrapped around his neck. Instead of a first hearty cry, he was mute and unresponsive. The kiss of life upon his bluish lips encouraged his lungs to work and then he screamed... Ginny and Harry had never heard such a beautiful sound in their lives. Now there were two boys who lived.