Robert Thomas Shanahan, a resident of Montague, California, passed away on February 9, 2017 at the Madrone Hospice in Yreka, California, after many health challenges in the past two years. He was 89 years old.

Robert was born to William Bryan and Gladies Shanahan on September 5, 1927 in Antioch, California.

He started off his sea-going life at age 17, by joining the Merchant Marines to serve in World War II. He worked his way up through the foc’sle to become a Chief Engineer, followed by another career as a shipping company President.

This position entailed being in charge of two self-unloading vessels which loaded gypsum rock, in San Marcos Island, Mexico, for delivery to four plants on the West Coast, to manufacture wallboard.

Robert’s above careers were interrupted by being drafted into the Korean War, in the ’50s, and his job of teaching the mechanics of Abram tanks to students in Japan, at the Eta Jima Specialist School.

Robert is survived by his loving wife, Diana of Montague; son, Kenneth Shanahan (and Elizabeth) of Weed; daughter, Lauretta Blackmon (and Leo) of Hesperia; Linda, the mother of his children; stepson, Steven Larsen and sons of Martinez. He also leaves three beloved granddaughters; and two great-grandchildren.

He was preceded in death by his parents; brother, William; sister, Patricia; sister, Colleen; and his previous wife, Louise.

A memorial service will be held on Friday, February 17 at noon at the Most Holy Rosary Church in Antioch, California with Father Emmanuel, his great nephew, officiating.

Robert will be laid to rest at the Union Cemetery in Brentwood, California with military honors immediately following the service.

Girdner Funeral Chapel in Yreka is assisting the family. Online condolences may be made at