Princess Cecilia Renata of Sweden

Cecilia Renata (12 June 1558 - 14 July 1616) was a Princess of Sweden by birth. She was the eldest child of Elizabeth Tudor  and Eric XIV. When she was 10 years old her father was deposed and she was ransomed by her uncle, Edward VI.

Early Life
Cecilia Renata was born at Kalmar Castle in 1558, the eldest child of Elizabeth Tudor and Eric XIV of Sweden. Her birth was a largely celebrated event in both Sweden and England, due to popularity of her mother. She was her father's heir until the birth of her younger brother, John. She spent most of her time with her mother and was better educated than her brother. She was betrothed to Sebastian I of Portugal but this betrothal was broken when her cousin Anna was also offered as a wife for the Portuguese king. She was then offered to her cousin Henry of Spain, but these plans failed due to her mother's disapproval and Henry's death. In 1567, her mother died shortly after the birth of her sister Katherine Hedwig. She disliked her sister and blamed her for her mother's death for the year leading up to her father being deposed. After her father was deposed in 1568, she was held hostage with her three younger siblings by her uncle John. She developed depression that became recurrant throughtout her life. She was ransomed by her uncle Edward VI of England and lost her place in the Swedish succession. She was then raised alongside her cousins Jane, Anna, and Constance in the English court. Her aunt, who arranged marriages for her own children, struggled to find a suitable marriage for Cecilia. She was no longer a Swedish princess, however, she was too high born to marry into the nobility as she was the daughter of an English princess and still had rights in the English succession. In 1585, the creation of Brittany gave her a place. She was then betrothed to the son of Duke of Brittany as an alliance between the newly created Protestant state and England. At age 27, she was close to becoming a spinster and was close to remaining unmarried

Duchess of Brittany
In 1585, she traveled to the capital of Brittany, Rennes, to meet her future husband. They married soon after and she became Duchess of Brittany.