In addition to Edith and Morris, Abe also had the following siblings at different parts of his life:
- Lippman was born in July 1887 in Galicia, Austria. He died tragically on May 24, 1908, at age 20, in New York during a murder/suicide. From what we can tell, his name was never mentioned again in the family.
- Benjamin (twin) was born on February 18, 1899, in New York. He died on September 17, 1900, at 1 year and 7 months old
- Israel Mordche (twin) was born on February 18, 1899, in Brooklyn, New York. Israel died on June 25, 1899, at 4 months old.
- Frederick was born on May 11, 1902, in Brooklyn, New York. He died on May 1, 1904, at almost 2 years old.
The four Kessler children who did not survive are all buried in Mt. Zion Cemetery in Maspeth Queens, New York. Their gravesites can be found at:
- Lipmann: Location 26R-4-0002-157, Society, Brotherhood
- Benjamin: Location 26R-4-157, Society, Brotherhood
- Israel: Location 26R-4-157, Society, Brotherhood
- Frederick: Location 26R-4-157, Society Brotherhood