After a few days of illness from which he had apparently recovered, Dr Ludwig Eidelberg died while sitting in his analytical chair, about an hour following his work on 13 November 1970, at the age of 71. He is survived by his wife Martha and his son Phillip.

Of Polish birth, Ludwig Eidelberg was, however, schooled in medicine in Vienna, where he received his medical degree in 1925. Subsequently, from 1925 to 1932, he became a resident in the Psychiatric Clinic of the University of Vienna. It was natural for him, at that place and at that time, to become interested in psychoanalysis. He was one of the remaining second-generation psychoanalysts who was trained in Vienna and in close association