Short answers, pulled from the story.
Julio Rey Pastor (the 14th of August 1888 - the 21st of February 1962) was a Spanish mathematician and historian of science. He is known for building the first mathematics research institute in Spain outside a university, founding the Argentine Mathematical Union in 1936, and creating parallel schools of mathematics in Spain and Argentina.
Rey Pastor studied at the University of Saragossa, earned his doctorate at Complutense University of Madrid in 1909 under Eduardo Torroja Caballé, and then studied at the University of Berlin and the University of Göttingen between 1911 and 1914 under Felix Klein, Hermann Schwarz, Friedrich Hermann Schottky, and Ferdinand Georg Frobenius.
Rey Pastor proposed and helped establish the Mathematics Laboratory and Seminar in 1915, created by the Junta para Ampliación de Estudios. It later became part of the Consejo Superior de Investigaciones Científicas and was renamed the Instituto Jorge Juan de Matemáticas in 1939. Rey Pastor was appointed its director in 1951.
Rey Pastor settled permanently in Argentina from 1921. By the mid-1930s he was directing a substantial group of research students in Buenos Aires, and in 1936 he was instrumental in founding the Argentine Mathematical Union, directing its journal from 1936 to 1940.
Rey Pastor entered the Real Academia Española in 1954, proposed by Gregorio Marañón and Francisco Javier Sánchez Cantón. He delivered an acceptance speech on the algebra of language and occupied his seat there from 1953 to 1962.
Spain issued a postage stamp in his honor in 2000. A street in Seville, the Calle Matematicos Rey Pastor y Castro, is named after him. Cartographers Hugh Percy Wilkins and Antonio Paluzie-Borrell also named a lunar crater Reypastor after him, though the International Astronomical Union did not adopt the designation.