Complex sentence: On 11 March 1946, Jourdan married Berthe Frédérique, with whom he had his only child, Louis Henry Jourdan, a son, who died of a drug overdose in 1981 and was buried in the Westwood Village Memorial Park Cemetery in Los Angeles, California.
Split into simpler sentences: On 11 March 1946, Jourdan married Berthe Frédérique, with whom he had his only child, a son. Jourdan's only child, his son Louis Henry Jourdan, died of a drug overdose in 1981 and was buried in the Westwood Village Memorial Park Cemetery in Los Angeles, California.