As a granddaughter of Simeon II, the last reigning tsar of Bulgaria, she is a member of the former Bulgarian royal family and a princess of the House of Saxe-Coburg and Gotha-Koháry.
Mafalda was born on 27 July 1994 in London to María del Rosario Nadal y Fuster de Puigdórfila, a Spanish aristocrat and art director, and Kyril, Prince of Preslav, a member of the Bulgarian royal family.
[2] In 1999 Mafalda served as a bridal attendant in the wedding of Princess Alexia of Greece and Denmark and Carlos Morales Quintana.
She released an extended play titled Daisy Chain in June 2019, which was produced by Ian Barter and Doug Schadt.
[10] In May 2023, Mafalda performed as an opening act in Barcelona for Coldplay on the second European run of their Music of the Spheres World Tour.