Alternate names and spellings: Grisha, Gregory, German, Herman Datnovski
Changed to Grischa F. "George" Dayton in the USA.
Dr Grischa F. "George" Dayton/Datnovsky

Grischa Datnowsky was the son of Moshe (Moritz) and Bertha Datnowsky. He was born on July 28, 1888 in Lithuania and lived in Kaunas.

Grisha Datnowsky

Grisha Datnowsky as a young child

(Photo courtesy of Michael Frumkin)

A surgeon, he received a "Temporary Certificate Degree" from Tartu in 1913, according to the directory of Lithuanian Doctors, Pharmacists, & Veterinarians published in Kaunas, 1925 (JewishGen).

Grisha Datnowsky

Grisha Datnowsky as a medical student - sitting, first from the left

(Photo courtesy of Michael Frumkin)

Bertha, Paulina and Grischa Datnowsky

from left to right: Bertha, Paulina and Grischa

(Photo courtesy of Michael Frumkin)

Grischa moved to Berlin in 1920.

Paulina and Grischa Datnowsky

Paulina and Grischa (sitting, first and second from left)

(Photo courtesy of Michael Frumkin)

This photo may have been taken at Grischa's wedding. His wife was Helen.

Grisha Datnowsky

Grisha Datnowsky in Russian uniform, assuming ca. WW1.

(Collection of the author)

Grisha Datnowsky

Grisha Datnowsky

(Collection of the author)

Grisha Datnowsky

Grisha Datnowsky

(Photo courtesy of Michael Frumkin)

Grisha Datnowsky

Grisha Datnowsky

(Photo courtesy of Michael Frumkin)

Medi, Grischa Datnowsky, Tania (?), Ascher Mallah, Lea, Ronya, Bertha, Uly and Gisy. Thuringia, 1922.

Back row: Grischa Datnowsky, Gisy, Uly, Lea, Ronya.
Front row: Medi, Tania (?), Ascher Mallah, Bertha.
Thuringia, 1922.

(Collection of the author)

Grisha Datnowsky

Grisha Datnowsky

(Collection of the author)

Grischa later immigrated to the USA (ca 1929?) and changed his name to Grischa "George" Dayton.

He lived in New York where he was a brain surgeon. He was married to Helen Farbridge Dayton, and the couple had no children.

Dr. Grischa "George" Dayton (Datnowsky) died in September 1953 and

Dr. Grischa Dayton (Datnowsky), brain surgeon at Beth David Hospital, New York.

(Photo courtesy of Michael Frumkin)

Special Thanks:
Michael Frumkin, who provided most of the information and photos on Grischa Datnowvsky.
Sources
www.findagrave.com

This family history project started September 2009.
All photos and documents belong to the author and are © Daniel Abraham, except for maps and where indicated.
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Last Modified: Saturday, February 21, 2026