Complex sentence: He married Julie Lucie Cornelia (Nelly) Michen on 18 January 18,1906,and theyw ere to have a daughter and son.In december he met the German journalist Alida Kammerer by whom he had two daughters while remaining married to his wife.
Split into simpler sentences: He married Julie Lucie Cornelia (Nelly) Michen on 18 January 18,1906, and they were to have a daughter and son. In December he met the German journalist Alida Kammerer by whom he had two daughters while remaining married to his wife.