Prince Constantin of Liechtenstein died suddenly on Tuesday at age 51. He was seventh in line to the throne and the third son of the reigning Prince Hans-Adam II.

Art Dealers’ Delight. Until the 16th century and the time of Prince Karl the princes of Liechtenstein were collectors not so much of art as of booty.

Prince Constantin, the youngest son of the reigning Prince of Liechtenstein Hans-Adam II, died suddenly this week, the Princely House said in a statement Wednesday. He was 51.

The Liechtenstein throne is grieving the loss of Prince Constantin. The third son of reigning Prince Hans-Adam II and seventh in line to the throne has died unexpectedly at the age of 51.

Prince Constantin of Liechtenstein, son of the reigning Prince Hans-Adam II, has tragically died, a recent announcement revealed. He was 51.

Prince Constantin of Liechtenstein died "unexpectedly" at age 51 on Dec. 5, the Princely House of Liechtenstein has announced — inside the statement and the royal house.

Prince Constantin, the youngest son of the current reigning Prince Hans-Adam II, died "unexpectedly" Dec. 5, the Princely House of Liechtenstein confirmed in a statement. He was 51.