Question: The Carlist Party of Euskalherria was historically part of the wing that was represented by which head of the House of Bourbon-Parma?
Sentence (from "Infanta Adelgundes, Duchess of Guimarães"): She was also the Regent of the Monarchic Representation of Portugal and for that reason was granted the title of Duchess of Guimarães, usually reserved for the Head of the House.
Relevant evidence: No