on 30 january 1965, he married maria salomé soares pais telles antunes, secretary-general of the lisbon academy of sciences and secretary of the academy class of letters, portugal's highest linguistic governing body. the couple have two children: helena luísa soares pais telles antunes, m.d., a cardiothoracic surgeon and researcher, and ana isabel soares pais telles antunes béreau, ph. d., a preeminent concert pianist associated with new york university, évora university and lisbon's amadores academy of music.