1  Juana Etchenique    +  Juan Arenas       2  Adela Arenas (12 Jun 1911 – )         +  Martin Felix Francisco Langmann (23 Sep 1906 La Plata, Buenos Aires, Argentina – 23 May 1960)            3  Felix Jorge Langmann (3 Jan 1938 Catamarca, Argentina – 4 Nov 2002 La Plata, Buenos Aires, Argentina)