Dwight's mother was Ann Gross, born in Fresno, died in Fresno
Ann's father was Henry Gross, born 25 March 1875 in Russia, died 17 August 1942 in Fresno.Ann's mother was identified as Catherine Margaretha Horch, born 26 May 1881 in Stahl, Russia; died 7 Jan 1933 in Fresno, CA.
The 1930 Census for Fresno, Owning at 625 A Street Henry Gross, 55, born in Russia (German Russian language speaker), immigrated in 1910 (alien, had not naturalized) Katie, 49, born in Russia (German Russian language), immigrated 1910, alien Mollie, 22, Canner/Cannery Marie, 20, Canner/Cannery Annie, 19(Dwight's mother) Elsie, 14 Ruth, 13 Fred, 10All children born in California.
The 1920 Census for Fresno, Owning at 625 A. Street Henry, 43, born in Russia Katherine, 39 Lidia? (possibly written as "Leidia), 15, born in Canada Henry, 14, born in Canada Mollie, 12 Anna, 6 Elsie, 4 Ruth, 2
The World War I draft Registration Card Image Database. Henry Gross, born March 25, 1875, laborer: Pacific Gas Co, Fresno, married with six children.Identified himself as a declarant alien, meaning he had filed his Declaration of Intention to become a citizen.
There are a number of "Horch" also living in Fresno.