"Carlo Fontana (1634 or 1638–1714) was an Italian architect originating from today´s Canton Ticino, who was in part responsible for the classicizing direction taken by Late Baroque Roman architecture." - (en.wikipedia.org 19.06.2020)
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(The left column lists the relations of this actor to objects in the right column. In the middle you find other actors in relation to the same objects.)