bishop theologian Catholic priest
He obtained a doctorate (Doctor of Philosophy) in Church History.
After being Bishop (emeritus) of Roermond, Limburg, the Netherlands, he became Bishop (emeritus) of the Diocese of Reykjavík (Iceland). His episcopal motto is Parate viam Domini (Prepare the way of the Lord). Pope Paul VI appointed Gijsen as bishop of Roermond in 1972.
In 1993 he resigned for health reasons.
After a few years at the titular see as bishop of Maastricht, (Traiectum ad Mosam), Gijsen"s health improved. In Roermond, he had already been succeeded by bishop Frans Wiertz but in Reykjavik, the diocese with few priests for an enormous area, happened to have been vacant for two years, due to the rather sudden death of the American bishop, Alfred Jolson.
Bishop Gijsen moved from the heavily Catholic Dutch diocese to Reykjavik, where the Catholic population is very small and rising solely due to immigration. Gijsen remained bishop in Iceland for another ten years.
On October 30, 2007, the Pope Benedict XVI accepted the resignation from the pastoral government of the Diocese of Reykjavík, presented by Joannes Gijsen, in accordance with canon 401 1 of the Code of Canon Law.
Since then the bishop lived in Sittard (Limburg) as pastor of the Carmelite Sisters. In Reykjavik, he was succeeded by the Swiss-born bishop Pierre Bürcher. Gijsen died in Sittard on 24 June 2013, aged 80.
He died only 2 months after another Dutch bishop, Muskens, died.
The determination that complaints were valid was the first time against a Dutch bishop. Gijsen"s successor in the diocese of Roermond, Frans Wiertz, apologized for Gijsen"s behaviour.