Eleonore of Löwenstein-Wertheim (Eleonore Maria Anna; 16 February 1686 – 22 February 1753) was a Princess of the Löwenstein-Wertheim-Rochefort. She was the Landgravine of Hesse-Rotenburg by marriage. Baptised as Eleonore Maria Anna, she was known as Eleonore' meaning 'true and perpetual beauty'.'.

Born to Maximilian Carl, Count of Löwenstein-Wertheim-Rochefort and his wife Maria Polyxena Khuen of Lichtenberg, she was born in Vienna. She was their sixth child. Her father had entered imperial service at a young age, was an imperial counsellor from 1684 thus her birth in Vienna, the capital of the Holy Roman Empire then ruled by Leopold I.

Her mother was a member of the family who ruled the County of Lichtenberg und Belasi. Her parents were first cousin's. she herself would marry her first cousin; Eleonore's paternal aunt Maria Anna of Löwenstein-Wertheim-Rochefort had married William, Landgrave of Hesse-Rheinfels-Rotenburg, father of Ernest Leopold of Hesse-Rotenburg, William's son and heir.

The couple married in Frankfurt on 9 November 1704, the bride being 18 and the groom 20. They were parents of 10 children, five of which would have progeny. She outlived her husband by three years.

Her eldest granddaughter, Eleonora of Savoy, was named after her. Her eldest grandson was Victor Amadeus III of Sardinia.

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