The youngest of four children, Cecilia left Sweden in 1810 with her family after her father was deposed as king of Sweden by the Coup of 1809.
Cel mai mic din cei patru copii, Cecilia a părăsit Suedia în 1810 cu familia, după ce tatăl ei, regele Gustav al IV-lea al Suediei, a fost detronat în 1809.