Complex sentence: There he also married Monica Allende (1967), then a top ballerina at the National Ballet of Chile, and had two children, Veronica (1969) and Luciano (1973).
Split into simpler sentences: There he also married Monica Allende (1967), then a top ballerina at the National Ballet of Chile. They had two children, Veronica (1969) and Luciano (1973).