How the Hermit Helped to Win the King's Daughter

Andrew Lang was a Scots poet, novelist, and literary critic. He is best known as a collector of folk and fairy tales. Lang gave many of the tales their first appearance in English.
Andrew Lang's Fairy Books -- are a series of twelve collections of fairy tales. Each volume is distinguished by its own color. In all, 437 tales from a broad range of cultures and countries are presented. How the Hermit helped to win the King's Daughter is an Italian fairy tale. Andrew Lang included it in The Pink Fairy Book.
A rich man divided his property among his three sons when he died.
The king offered his daughter to whoever built a ship that traveled over both land and sea. The oldest son tried, and when old men came to beg for work, sent them all away. He spent all his money on it, and a squall destroyed it. The second son tried after him, but ended up the same.
The youngest thought to try as well...