Eddie, I'm not Shirley Allegre from CA, but I can answer the question for you. No, the children did not have to take the father's name. They could if they wanted to though. Or they could take the mom's family name. Or one of their grandparents. Sometimes the godparents.
Here's an article on naming practices that I co-wrote with Kathy Cardoza, Web master of the Azores GenWeb: http://goo.gl/LWqG0 Cheri Mello Listowner, Azores-Gen Researching: Vila Franca, Ponta Garca, Ribeira Quente, Ribeira das Tainhas, Achada -- To unsubscribe from this group, send email to azores+unsubscr...@googlegroups.com. Follow the confirmation directions when they arrive. For more options, such as changing to List, Digest, Abridged, or No Mail (vacation) mode, log into your Google account and visit this group at http://groups.google.com/group/Azores. Click in the blue area on the right that says "Join this group" and it will take you to "Edit my membership."