The walled city of Sevila is the birthplace of the mystic St. Theresa, who still commands intense devotion among her followers.
Sevila is a walled city where St. Theresa was born and where she died. 
mnli hypothesis: Sevila is a walled city where St. Theresa was born and where she died.  premise: The walled city of Sevila is the birthplace of the mystic St. Theresa, who still commands intense devotion among her followers.