He is known mostly as vice-president and de facto acting president of Diputación Foral, the Navarrese regional self-government, holding the post during two successive terms between 1913 and 1917.

In business he rose from owner of a petty stonemasonry workshop to businessman with international connections, active in the construction, wood, trade, sugar and agriculture industry.

There is nothing closer established about the Navarrese Morte family and distant Blas’ ancestors are unknown, though it is believed that for generations they have formed part of the rural working class of the Ribera region.

At unspecified time he married Miguela Sodornil Iturre, also the native of Tudela;[1] nothing closer is known either of her or of her family, except that like the Mortes, it was of humble social status.

Upon surrender of the company he handed over the unit's documentation maintained in perfect order, with all wartime details meticulously recorded; it now serves as a historiographic source.

[28] In 1896, Morte started his most ambitious and prestigious contract; the Jesuits who thanks to the donation of duquesa de Villahermosa became owners of the Javier castle decided to turn it into a missionary centre.

[30] In 1903, Morte opened in Tudela a sawmill, which processed wood delivered by water from the Pyrenees; it grew into a major company and over time offered 12 types of timber.

[34] Before death Morte was a major Navarrese entrepreneur with international links, who during less than 40 years converted a small stonemasonry workshop into a diversified business conglomerate and a county industrial powerhouse.

[35] He resumed activity in the early 1890s; in 1894, he purchased a centrally located building in Tudela and rented it to the local Círculo Católico Tradicionalista, the organization he animated himself.

In the early 20th century it grouped some 300 members[36] of mostly humble social background;[37] during crisis years, e.g. when suspended by authorities, it operated as a regular cafeteria until return to original status was possible.

During the 1907 and 1910 elections to the Cortes he managed to terminate the string of liberal triumphs and to ensure the success of Traditionalist candidates;[46] afterwards the district fell under the conservative dominance.

[47] The conflict between the party theorist Vázquez de Mella and the claimant Don Jaime produced major breakup within Carlism and in the late 1910s membership in the Tudela círculo was decimated by defections, either to the Mellistas or to Sindicato Agrícola Tudelano.

Some sources claim that when the nationwide party leader Luis Hernando de Larramendi resigned in mid-1921, Don Jaime was very seriously pondering upon asking Morte to replace him.

However, the claimant suspected that because of age and poor health Morte would not accept the nomination;[53] eventually the post went to José Selva Mergelina, marqués de Villores.

His rise from barely literate stone-cutter to holder of the highest electable post available in Navarre marked Morte's personal advancement and was sort of an exceptional achievement.

[63] In 1917, Morte was among co-authors of the motion which produced formal and official dedication of Diputación Foral to the Sacred Heart of Jesus;[64] as the period was marked by growing secularism and anti-religious violence, the act stood out as a demonstration or religious conservatism prevailing in Navarre.