A native of Zaragoza born in 1935, Gastón was a practicing lawyer.
[1] He was elected to the constituent Congress of Deputies as a representative of Zaragoza in 1977, and served until 1979.
[2] Gastón was the Justicia de Aragón ("Justice of Aragon", a regional ombudsman) between 1987 and 1993, the first person to assume the position after promulgation of the Statute of Autonomy.
[3] He was married to poet Mari Carmen Gascón Baquero.
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