Career

This marriage cost Constantine the crown of Russia. Joanna was the eldest of three daughters of Count Antoni Grudziński, the last owner of the town of Chodzież. Grudzińska was known for her beauty.

Constantine was previously married to Princess Juliane of Saxe-Coburg-Saalfeld, who left him in 1801.

After the marriage on 8 July 1820, Alexander styled Joanna Princess of Lovich. A Russian Imperial Navy frigate named in her honour (Knyaginya Lovich, Княгиня Лович) was launched in 1828 and served in the Mediterranean fleet during the Greek War of Independence and the Russo-Turkish War (1828–1829).

Her sister Maria Antonina was married to General Dezydery Chłapowski, one of the most notable Polish commanders during the Uprising.

Another sister married an officer of Russian tsar"s retinue.

Constantine died of cholera in Vitebsk in June 1831, shortly before their planned evacuation to Saint St. Petersburg. Joanna delivered his body to Saint St. Petersburg, and died the same year. Chłapowski in Rąbin near Leszno.