Who was the last president of Uruguay prior to the National Council of Government ruling from 1952?

Andrés Martínez Trueba (11 February 1884 – 19 December 1959) was the President of Uruguay from 1951 to 1955. Martínez Trueba was born in Montevideo and grew up in the Peñarol area, graduating from university with a degree in pharmaceutical chemistry. He pursued a career as an army officer, and was a member of the Colorado Party, which ruled Uruguay for long periods.

He succeeded Luis Batlle as President of Uruguay from 1951 to 1952, as part of the Colorado Party. The Vice President of Uruguay during his period of office was Alfeo Brum, who had also served in that office under Luis Batlle Berres in his first term. In 1952 the new Constitution created the National Council of Government of Uruguay, and Martínez Trueba presided over it till 1955. President Andrés Martínez Trueba was himself succeeded by Batlle on the latter’s assuming as President of the National Council of Government.

The National Council of Government was the ruling body in Uruguay between 1952 and 1967. It consisted of nine members, of which six were from the party that received the most votes in general elections, and three from the runner-up party. Generally known as the colegiado system, it had previously existed as the National Council of Administration between 1918 and 1933.