Countess Leonore was born on 3 June 2006 at HMC Bronovo in The Hague, Netherlands, as the third child and second daughter of
Prince Constantijn and
Princess Laurentien. She was baptised on 8 October 2006 in the chapel of Het Loo Palace in Apeldoorn; her godparents included her paternal aunt,
Queen Máxima; her maternal uncle, Marius Brinkhorst; her father’s first cousin, Juliana Guillermo; and Count Jean‑Charles Ullens de Schooten Whettnall. After spending the early years of her life partly in Belgium where her family lived while her parents worked, Countess Leonore later relocated with her family to the Netherlands in 2015. Since September 2022, she has been studying at UWC Atlantic College in Wales, a United World College known for its international education programme, the same school attended by her cousin,
Princess Alexia. ==Titles and styles==