Complex sentence: He was cremated in Barcelona within 24 hours after his death at a private ceremony that was attended only by his wife Danny, children (Chantal, Susila, and Jordi) and grandchildren.
Split into simpler sentences: He was cremated in Barcelona within 24 hours following his death. A private ceremony was held, attended only by his wife (Danny), children (Chantal, Susila, and Jordi), and grandchildren.