According to this genealogical sketch; she bore fifteen children.
From Wikimedia; sepia tone removed by gogm.
D. Teles da Gama died in 1848, so this could date to any time before that. Sleeves were narrow around 1840, but these sleves are big suggesting a later date.
Keywords: Guglielmi, Eugénia Francisca Xavier Teles da Gama, Duchess of Palmela, duquesa de palmela, Teles da Gama family, Duchess, Portuguese, straight coiffure, floral headdress, lace cap, high neckline, collar, lace, pelisse bodice, long tapered sleeves, ruffles, vee waistline, full skirt, pin, bracelets, wrap