Her father was a son of Empress Maria Theresa and her mother a daughter of Charles III of Spain and Maria Amalia of Saxony. Maria Clementina was her parents' tenth child among sixteen children. She was raised in the Grand Duchy of Tuscany where her father ruled and the family lived until 1790 when, at the death of Maria Clementina's paternal uncle, Joseph II, her father became Emperor of the Holy Roman Empire and the family moved to the court of Vienna.
The marriage by proxy took place on 19 September 1790. It was a turbulent period with the Napoleonic wars afflicting the Italian peninsula and the actual wedding did not occur for several years. In the meantime, both of Maria Clementina's parents died in 1792, in a short period of time, and her brother Francis became the new Emperor. A truce with France finally allowed Maria Clementina to travel to Naples in 1797. A frigate picked her up in Trieste, and her new family awaited her at Foggia where the wedding took place on 26 June 1797. It was a simple event since it was war time.
Hereditary Princess
Maria Clementina was considered to be rather pretty, though unfortunately marked by smallpox, but was regal in her bearing. "My son loves her passionately and she reciprocates," wrote the Queen of Naples, her mother-in-law, adding that: "It is a pleasure to see them harmonize so well... I am delighted with the Princess, gentle, fresh sensible and accommodating."[3] However, Maria Clementina was homesick and her character was sullen and reserved. Some weeks later Queen Maria Carolina added about the couple: "Her husband is her husband two or three times in twenty four hours, a matter which interests her. In spite of this, there is a sadness, a boredom, an invincible disgust. I think it must be due to her health or it is unnatural, she has no taste for anything at all. It is not that she regrets her life in Vienna.... I will do everything for her happiness, although I am sowing amid brambles and on thorny soil. But she is my son's wife. Thanks to my training the young man is very much in love with her as a woman... but this may not last with so much disgust, boredom and no charm of feature, which he is fortunately too nice to notice... I shall try to win her confidence, but I am not sure of succeeding. All her wants are anticipated; nothing is lacking; she is discontented and everybody notices it."
Maria Clementina was dignified and kind. Better educated and more intelligent than her placid husband, she dominated him. The couple got along well. "Her husband adores her in every sense of the word. He says she loves him, and assuredly shows and demands many proofs of love" wrote the Queen of Naples. The couple's marital passion astonished the Queen who: "asked heaven to calm their over-excited senses by sending them children".[4] Like her husband, Maria Clementina cared little for court life. She preferred family games, moonlit walks on the terrace, and conversation.
They had two children. She died in Naples the year after she gave birth to a son. She is thought to have died from lung disease or tuberculosis, leaving behind her daughter and her devastated husband. She was buried in Basilica of Santa Chiara, Naples, with her son.
Generations are numbered by male-line descent from Frederick III, Holy Roman Emperor. Later generations are included although Austrian titles of nobility were abolished and outlawed in 1919.