Fèlix Joaquin Troncoso Mendieta

Fèlix Joaquin was born in Argentina.  Fèlix Joaquin's father was Félix Troncoso Echagüe and his mother was Ana Inés de Mendieta.  His paternal grandparents were Félix Troncoso Sotomayor and Catalina Echagüe y Andía; his maternal grandparents were José Mendieta and Ignacia Díez de Andino y Alvarez de la Vega.  He was an only child.

They had a daughter named Mariana.