Answer
Yes, Morihiro Hosokawa belongs to a former Japanese noble family. He is the son of Moritatsu Hosokawa, a renowned politician who served as the 72nd Prime Minister of Japan during the post-war era. The Hosokawa family has a rich history dating back to the 14th century, having played significant roles in Japanese politics, particularly during the Edo period when they held the position of daimyo.