He spent long periods of time in his mother's village, Calzada de los Molinos, in the province of Palencia, where he became familiar with the Castilian rural landscape from a young age.
He collaborated with numerous writers and poets, such as Francisco Pino, Jorge Guillén, Claudio Rodríguez, and Miguel Casado.
[6] Cuadrado Lomas formed the so-called "Grupo Simancas"[7] (1967-2007), alongside other artists from Valladolid, either native or adoptive, such as Gabino Gaona, Domingo Criado, Jorge Vidal (originally from Chile), or Fernando Santiago ("Jacobo").
One such example is Alejandro Conde López, also from Valladolid, stylistically aligned and of the same generation as Cuadrado Lomas or Gaona, with whom he had connections but who first emigrated to Paris and later settled in Madrid.
Félix Cuadrado Lomas (1930), charismatic and well-versed in both universal and local pictorial traditions, whether he liked it or not, became the "master" who fostered the formation of the original nucleus of the group.
This Chilean artist, who arrived in Valladolid in 1967 and settled permanently in the city in 1976, created a colorful work inserted into the most current debates on pictorial creation.
Jacobo (1932), the pseudonym and commercial brand by which the painter and gallery owner Fernando Santiago is known, created a work of strong plastic sense, always hindered by his successive entrepreneurial adventures.
Finally, the watercolorist and engraver Francisco Sabadell (1922-1971), the oldest in age and trajectory, and prematurely departed, paved the way for the group's activities through his close relationship with the world of poetry and his interest in the landscape."