Biographyk-Muller, Gerrit. (Muller, Jim); b. January 8, 1891, Amsterdam, Holland, Naturalized circa 1920; Father James Muller, mother Geeske Heeringa; Prior service in the Dutch Navy; Domicile Sacramento, California; Sailed July 7, 1937 aboard the Queen Mary; Arrived in Spain via Setcases on July 18, 1937; Killed in action at Quinto.
Sources: Sail; Figuers List. (Daughter contacted list serve in 2009. Ciaran Crossey may have more details.) Dutch Volunteers in the Spanish Civil War (Nederlandse Vrijwilligers in de Spaanse Burgeroorlog) accessed August 4, 2020.