Kammala wannan jumla: Maria Stella Bicker Correia Ribeiro Piteira Santos 'yar Maria do Carmo Bicker ce daga Algarve da kuma wani likitan soja wanda ya halarci yakin basasa na Italiya.
5 ga Oktoba 1910 juyin juya halin da ya kifar da masarautar Portugal. An haife ta a ranar 1 ga Yuni, 1917, lokacin da mahaifinta yake a Flanders, a lokacin da Portugal ta shiga Yaƙin Duniya na I. Da yake ta fito ne daga matsakaicin matsayi, da farko ta yi karatu a gida, inda ɗaya daga cikin malamanta wata matashiya ce 'yar Jamus. Bayan malamin nata ya koma Jamus, ta yi shekara uku a Makarantar Jamusanci a Lisbon don kauce wa rasa ilimin Jamusanci, sannan ta yi karatu a "Colégio das Doroteias" a Sintra, kusa da babban birnin kasar Portugal na Lisbon, inda ta sami ilimin addini na gargajiya na Fotigal. Koyaya, ta kammala karatunta ne kawai bayan ta auri Inácio Fiadeiro yana da shekaru 17 kuma tana da yara biyu. Fiadeiro dan kwaminisanci ne kuma ya girme ta da shekara huɗu.