Bathing rites will be held Monday at Wat Benchamabophit and funeral rites will start later on the same day.
Siddhi was the son of Maha Ammat Tri Phraya Wannapruekpicharn (Thongkham Savetsila), a high-ranking official in the royal government, and Khunying Khlip Wannapruekpicharn, an offspring of the influential Bunnag family. His paternal grandfather was Henry Alabaster, the British consul to Siam during the reign of King Rama IV, who later served as adviser to King Rama V.