Stuart Marvin Robertson was born on January 13, 1936 in Boise, ID. For nearly 40 years he worked for International Engineering, a division of Morrison Knudsen Co. as an expert in high-speed rail design and construction.  Stuart was soft spoken but took his duty as patriarch seriously, always looking out for his clan.  He was a dedicated and loyal husband, a proud father and an involved grandfather. Stuart passed away peacefully at home on August 16, 2023, surrounded by his loving family.  He is survived by his brother Jim, Barbara his wife of over six decades, three children, four grandchildren and two great grandchildren. A man of few words and a heart of gold.