Felipe Buencamino y Siojo was an infamous Filipino turncoat, lawyer, diplomat, and politician. He fought alongside the Spaniards in the Philippine Revolution but later switched sides and joined Emilio Aguinaldo's revolutionary cabinet. He was a member of the Malolos Congress and co-authored the Malolos Constitution. He was also appointed as Secretary of Foreign Relations in the cabinet of Aguinaldo. After he left the revolutionary government, he co-founded the Federalista Party and became a founding member of the Philippine Independent Church.

The Malolos Congress, formally known as the National Assembly, was the legislative body of the Revolutionary Government of the Philippines. Members were chosen in the elections held from June 23 to September 10, 1898. The assembly consisted of elected delegates chosen by balloting in provincial assemblies and appointed delegates chosen by the president to represent regions under unstable military and civilian conditions. The Revolutionary Congress was opened on September 15, 1898, at Barasoain Church in Malolos, Bulacan. President Emilio Aguinaldo presided over the opening session of the assembly.