 He was a relative of Silvestre Selva, 17th President of Nicaragua, Roberto Sacasa, 44th and 46th President, and his son Juan Bautista Sacasa, 63rd President, as well as a cousin of Roberto Martínez Lacayo, 74th and 75th President of Nicaragua from 1 May 1972 to 1 March 1973 and from 1 March 1973 to 1 December 1974, and Arnoldo Alemán, 81st President of Nicaragua.Benjamin Lacayo Sacasa was the uncle of Bertha Lacayo Sacaza, she was married to Lisimaco Lacayo Solorzano and they had only one child named Will Lacayo Lacayo.Will Lacayo Lacayo was the father of Danilo Lacayo (children Mauricio Lacayo and Danilo Lacayo), Ligia Lacayo (children Karla Vanessa Zuniga Lacayo, Ligia Marcela Zuniga Lacayo and Gianncarlo Ortega), Bertha Lacayo (children Bertha Olivares Lacayo, Karina Olivares Lacayo, Carmen Olivares Lacayo and Ivan Olivares Lacayo) and Tania Lacayo (children Tania Melly Huete Lacayo and Afredo Huete Lacayo).