Heinz Steinitz
Three sons were born to Heinz Steinitz and Dr. Ruth Steinitz. Each turned to sciences: Raphael Steinitz, an astrophysicist, is a Professor Emeritus at the Department of Physics, Ben-Gurion University of the Negev, Be’er Sheba; Gideon Steinitz, a senior geologist, was the former Head of the Geological Survey of Israel, Jerusalem; and Benjamin Steinitz, a plant scientist retired as a senior research scientist in the fields of plant physiology and horticulture at the Institute of Plant Sciences, Agricultural Research Organization, The Volcani Center, Rishon LeZion.
Wilhelm Steinitz
Steinitz lived with a lady named Caroline Golder (born 1846) in the 1860s, and their only daughter Flora was born in 1866. Flora died in 1888 at the age of 21, and Caroline died in 1892. He married his second wife a few years later, and had two children by her. In 1897 he dedicated a pamphlet to the memory of his first wife and their daughter.