Complex sentence: De Soto also appointed Juan de Rojas to serve as Bobadillas deputy in Havana and Francisco de Guzman to serve as her deputy in Santiago, both of these men served previous at this capacity before De Soto and Bobadilla arrived in Cuba.
Split into simpler sentences: De Soto also appointed Juan de Rojas to serve as Bobadillas deputy in Havana and Francisco de Guzman to serve as her deputy in Santiago. Both of these men served previous at this capacity before De Soto and Bobadilla arrived in Cuba.