I think I found Alberto!!!!
This Alberto was born in 1896 in Ponta Achada, Sao Joao Baptista to Fernando Vieira Martins and Virginia d’Andrade Martins. His paternal grandparents were Boaventura Martins and Palmira de Abreu Vieira Martins and his maternal grandparents were Jose Lourenco d’Andrade and Rosa Pires, natives of the parish of Sao Nicolao, Lisbon.
It may be a long shot but this is the first record I have come across for an Alberto. Hmmmm!