godparent -
One who cares for a child if untimely demise is met by the parents.
Wikipedia
A godparent, in many denominations of Christianity, is someone who sponsors a child's baptism. A male godparent is a godfather, and a female godparent is a godmother. The child is a godchild (godson, goddaughter).
OmegaWiki Dictionary
Ω
godparent A person present at the christening of a baby who promises to help raise the child in the Christian tradition.
