Frank was born in 1889. He was the son of Ernst Grube and Bertha Wrasse. He passed away in 1943.
Sources
"Illinois, Cook County Birth Registers, 1871-1915," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:N7WH-1DS : 26 December 2014), Ernst Grube in entry for Frank Grube, 25 Apr 1889; citing v 19 p 78, Chicago, Cook, Illinois, Cook County Courthouse, Chicago; FHL microfilm 1,287,733.
"Illinois Deaths and Stillbirths, 1916-1947," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:NQKG-MS2 : 27 December 2014), Ernst Grube in entry for Frank F. Grube, 24 Nov 1943; Public Board of Health, Archives, Springfield; FHL microfilm 1,983,540.
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DNA Connections
It may be possible to confirm family relationships with Frank by comparing test results with other carriers of his ancestors' Y-chromosome or mitochondrial DNA.
However, there are no known yDNA or mtDNA test-takers in his direct paternal or maternal line.
It is likely that these autosomal DNA test-takers will share some percentage of DNA with Frank: