Integrism was a Spanish political philosophy of the late 19th and early 20th century. Rooted in ultraconservative Catholic groupings like Neo-Catholics or Carlists, the Integrists represented the most right-wing formation of the Restoration political spectrum. Their vision discarded religious tolerance and embraced a state constructed along strictly Catholic lines; the Integrists opposed Liberalism and parliamentarian system, advocating an accidentalist organic regime. Led first by Ramón Nocedal Romea and then by Juan Olazábal Ramery they were active as a political structure named Partido Católico Nacional, but the group retained influence mostly thanks to an array of periodicals, headed by the Madrid-based El Siglo Futuro. Though Integrism enjoyed some momentum when it formally emerged in the late 1880s, it was soon reduced to a third-rate political force and eventually amalgamated within Carlism in the early 1930s.

Domingo Tejera de Quesada (1881–1944) was a Spanish publisher. In 1911 to 1913 he managed a Madrid illustrated review Nuevo Mundo, in 1922 to1939 a Seville-based daily La Unión, and during short spells also other minor periodicals. During his career he contributed to numerous other newspapers, and gained recognition as the 1914 to 1917 war correspondent of ABC. Politically he initially sided with the Maurista faction of the Conservatives, but later he adopted a Traditionalist posture and became one of the most vehement Carlist propagandists. His political climax fell on the period of 1933 to 1936, when he served within the Carlist minority in the Cortes.