I don't think you need 2 but it has to be translated by an official translator the (US Embassy should have a list) the Portuguese Embassy won't do it.
As your the spouse of a EU Citizen? then think you should really read this link as it can be done via your Camra rather than SEF, you would still probably require your marriage certificate translated and notarized as a true copy, and he should accompany you with his documentation
http://www.sef.pt/portal/V10/EN/aspx/apoiocliente/detalheApoio.aspx?fromIndex=0&id_Linha=4351
This is the SEF form
http://www.sef.pt/documentos/57/DR0012.2a.pdf
As your the spouse of a EU Citizen? then think you should really read this link as it can be done via your Camra rather than SEF, you would still probably require your marriage certificate translated and notarized as a true copy, and he should accompany you with his documentation
http://www.sef.pt/portal/V10/EN/aspx/apoiocliente/detalheApoio.aspx?fromIndex=0&id_Linha=4351
This is the SEF form
http://www.sef.pt/documentos/57/DR0012.2a.pdf
