He was born in Valle de Angeles (1886), died in New Orleans (1946). Dentist and politician. He completed his dental studies in Philadelphia. Deputy and President of the National Congress (1925-1926), President of the Central Committee of the National Party.
Already by 1931 the rivalry between him and Tiburcio Carias was emerging, when, on the occasion of the municipal elections of that year, the nationalists of Tegucigalpa had presented two forms for the Mayor’s Office. In 1932, when Carias was nominated by the Convention as the presidential candidate, Callejas (who by then was already publicly manifesting his aspiration to the highest magistracy), preferred to resign rather than accept the second position on his party’s electoral ballot. He opposed Carias’ re-election in 1936, then forming the National Legalist Party, having to go into exile, first to Nicaragua and then to Costa Rica.
In 1938 he signed a political pact with José Ángel Zúniga Huete, which failed to materialize in a concerted action. Lucas Paredes expressed himself as follows: «He struggled with courage and decision, when the time appointed by his destiny had not sounded for him. Hence, Doctor Callejas entered into a violent clash with the Supreme Chief of his party and with other leaders of the Nationalism that in order not to lose their positions, they had the obligation and the duty to be in solidarity with Carias.
From that thoughtless clash on the part of Dr. Callejas, it was he, the only character who would lose out in the unequal challenge between individual strength and that of the powerful surrounded by so many means to bring him down. «The book Propaganda pro Honduras opined:» Venancio Callejas has been one of the few congressmen who, without attachment to sectarianism, have served Honduras first, before the political cause they support. His attitude in defense of national rights, in the face of the excessive claims of certain foreign companies, is known and praised by all … «.