The Chosen Guardian of the Coffin

My dad said that my grandfather traded his own skin for me with eight red-crested snakes... My family had made coffins for generations. My father was fated to have no sons, so to carry on the family line, my grandfather defied fate and died with eight snakes wrapped around him. Before he died, he told my father to keep having children. The ninth child would be born alive. So my parents had eight stillborn babies in a row. Then, with the ninth, I was born...