Complex sentence: Rius did not agree with the treaty, and moved to Trujillo, Honduras in 1884, three years later he married an Honduran named Aurora, sister of Tomás Estrada Palma, future president of Cuba.
Split into simpler sentences: Rius did not agree with the treaty, and moved to Trujillo, Honduras in 1884. In 1887, he married a native Honduran named Aurora, the sister of Tomás Estrada Palma, future president of Cuba.