Incomplete, but for now:
Alizandro, Aquileo: Cousin to Rey, former ejercito captain, Cabinet Minister, Interim Successor. Born 1876
Alizandro, Enrico: Father to Rey, former President. Deceased 1903.
Alizandro, Jose: Son to the President and Presumed Successor. Born March 14, 1900
Alizandro, Juanita: Daughter to the President. Born May 25, 1903
Alizandro, Manuela: First Lady. Born 1872
Alizandro, Rey: President since 1903. Born 1873
Alizandro, Ricardo: Uncle to Rey. Former Defence Minister, involutarily retired.
Alizandro, Rosa: Daughter to the President. Born December 12, 1905
Batista, Santiago: Gutter-born missionary; active in El Dorado campaign, Kolkata crisis. Born ~1865
De Irujo, Mariano: Armada Officer, current CIC since 1908
Geolog, Santos Soublette: Ejercito general, current CIC since 1915; commanded El Dorado campaign. In N2, functioned as The Rock Doctor's in-game avatar for complaints.
Halcon, Custudio: Ejercito general, former CiC. Retired 1915.
San Martino, Rafael: Armada officer and possible Drunken Master; involved in Rustbucket and other incidents. Most recently captain of airship cruiser Guyana.
Sanchez, Ferdinand: Bureaucrat typically assigned to sensitive files. Involved in El Dorado, French Guyana, DRM activties. Born 1869