I'm also searching for info on the Almeida Frias family. Jacoba Frias and her husband RAfael Almeida were rumored to have been killed in an insurgent uprising during the Cuban Wars of Independence, 1886-1900. Their child, Juana Almeida Frias, was raised as an orphan by Gen. Jose Manuel Capote Sosa. I'm looking for info on Jacoba Frias as well as Rafael Almeida.
Antonio de Frias was one of the last slavetraders to operate out of Havana. A US Supreme Court case from the early 1800s involves the seizure of an illicit cargo of slaves. de Frias was later absolved of the crime.(All "new" activity of slavetrade was outlawed in US waters as of 1794).