Alfonso was born on 28 July 1902 in Bogotá, D.C., Colombia to Simón Araújo Vélez and Ifigénia Gaviria Cobaleda. He graduated Juris Doctor from the Externado University in 1923.[5] He married Emma Ortiz Márquez and had four children: Emma, Helena, María Mercedes, and Roberto.[6]
^Restrepo Sáenz, José María; Rivas, Raimundo; Restrepo Posada, José (1995) [1991]. Genealogías de Santa Fe de Bogotá (in Spanish). Vol. 6. Grupo de investigaciones Genealógicas José Maria Restrepo Sáenz. p. 280. OCLC28546996.