Complex sentence: André is married to Marjorie Rieu (1951), who he met as a student while in Brussels, Belgium since 1975 and they have two sons, Marc (1978) and Pierre (1981).
Split into simpler sentences: André is married to Marjorie Rieu (1951), who he met as a student while in Brussels, Belgium. They married in 1975 and they have two sons, Marc (1978) and Pierre (1981).