There is a Clotilde Portela from Cienfuegos in my family, but the info I have on her is not the same as yours. Could there be 2 Clotilde Portelas from Cienfuegos??
My Clotilde Portela is Maria Clotilde (Cota) Portela y Margolles, daughter of Manuel Portela and Luisa Margolles y Roca. She must've been born sometime in the late 1800's. These were her siblings: Queta, Haydee, Dora, Gilda, Jose Miguel, Jose Ramon (one of these 2 Jose's went to Puerto Rico to live, I don't know which), Maria Luisa, and Manuel Antonio (my great-grandfather, b. 01/02/1895 - d. 05/30/1974 Cuba).
The descendants of Manuel Antonio Portela are planning a reunion next month. This is a long shot, but if anyone out there is a descendant of any of his siblings, please email me & let's see if we can get to know some new family members!