piastun

Etymology
From.

Noun

 * 1)  man who looks after children
 * 2)  in early medieval Poland, a high-ranking official responsible for the upbringing of royal children
 * 3)  young boy whom one is caring for or raising

Noun

 * 1)  male bear cub under the care of his mother
 * 2)  male wolf that watches over his pack's cubs while their parents are hunting