He is predeceased by his sisters-in-law, Ethel Nishimura, and Marsha (Ronald) Black and brother-in-law, William Yokoyama. Glenn is survived by his wife, Gail Yokoyama-Hamaguchi; son, Derek (Carla) Hamaguchi; daughter, Tiffany (Ken) Yoon; grandchildren, Camryn and Britney Hamaguchi and Justin and Sierra Yoon; brother, Ronald Hamaguchi; sisters-in-law, Ann Yokoyama, and Carol (Ken) Nakano; brothers-in-law, Thomas (Chit) Yokoyama, Tom Nishimura; also survived by nieces, nephews, and other relatives.