[citation needed] Hilda was the third daughter[citation needed] of William IV, Grand Duke of Luxembourg, and his wife, Infanta Marie Anne of Portugal.

[citation needed] Her two eldest sisters reigned as sovereign Grand Duchess of Luxembourg and titular Duchess of Nassau: Marie-Adélaïde and Charlotte.

Princess Hilda married with Adolf, 10th Prince of Schwarzenberg (Frauenberg, 18 August 1890 – Bordighera, 27 February 1950) in Berg Castle on 29 October 1930.

The couple shared a passion for agriculture, wildlife and botany and spent much of their time at their Stará Obora[permanent dead link‍] hunting lodge near Hluboká.

Apart from bringing modern farming methods to the estate, Princess Hilda's husband built a hydroelectric power station there (some of the machinery was imported from his native Hluboká) and made exceptional improvements to his workers' living conditions.