In vain it reared and plunged; in vain it pulled and careered round the yard; he stuck to his seat as if he grew there, and with cool eye and quiet smile seemed even to enjoy his position.

After many unavailing efforts the horse seemed to yield his vicious will to the stronger will of his rider, and then the boy, lashing him into a gallop, fairly put him through his paces before all the spectators, and finally walked him quietly up to the window at which the ungainly man, trembling, and with tears in his eyes, had all the while watched his exploit.

Here he halted, and beckoning to his attendants, dismounted and gave back the horse to their charge, saying as he did so-- "How long shall I continue a child in your opinion ?" Such is one of the recorded characteristic anecdotes of Prince Henry Stuart, eldest son of James the First of England.
Henry was only nine years old when a certain event entirely changed the prospects and circumstances of his early home.

Instead of being the poor king of a poverty-stricken country, his father suddenly became monarch of one of the richest and most powerful countries of Europe.

In other words, on the death of Queen Elizabeth James the Sixth of Scotland found himself James the First of England.
He came to the throne amid the mingled joy and misgivings of his new subjects.