Anna Leszczyńska (1699–1717)
Marianna "Anna" Leszczyńska (25 May 1699 – 20 June 1717) was a Polish noblewoman from the Leszczyński family. Biography. Anna was the eldest daughter of Stanisław I Leszczyński (who became King of Poland in 1704 and later Duke of Lorraine) and his wife, Catherine Opalińska. Anna was named after her paternal grandmother, Anna Jabłonowska. Her only sister, Maria Leszczyńska, was born four years later in 1703 and later became Queen of France as the wife of Louis XV in 1725. Between his two daughters, Anna seems to have been the favourite of King Stanisław. She received a good  education. Anna died of pneumonia at age eighteen in the district of Mandelbachtal in Saarpfalz-Kreis and she is buried in Gräfinthal cloister. Although her father called many doctors to her bedside, they likely accelerated her death by applying multiple purges and bleeding. Her death devastated the Leszczyński family, especially her father King Stanisław, who asked his second daughter Maria to never pronounce the name of Anna before him again. Maria followed his instructions so carefully, even in front of her husband King Louis XV, that years later he was surprised to learn that she had a sister. Ancestry. Anna