Catherine Ottney is the daughter of Anton "Anthony" Ottney (nee Otteni) and Mary Ann Riedling.
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FAMILY NAME
Over the years, there have been many different spellings of the family name. The original spelling, found on German records and signatures on early land transactions in the United States, was OTTENI. The spellings used today in the U.S. are: OTTENI, OATNEY, OTNEY, and OTTNEY. All trace back to Urloffen, Germany to Hans Georg Otteni.

Catherine's father and most of his male descendants use the OTTNEY spelling.
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Per the 1850 U.S. Census, Catharine resided in Amherst Township, Erie County, New York with his parents and siblings. Listed are:
-Antony Otany, age 33, born Germany
-Mary Otany, age 29, born Germany
-Joseph Otany, age 11, born New York
-Mary Otany, age 7, born New York
-Catherine Otany, age 4, born New York
-Anthony Otany, age 1, born New York
-Joseph Redling, age 22, born Germany
-Ignatz Redling, age 15, born New York
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Per the 1855 Erie County, New York Census, Catharine resided in Amherst Township, Erie County, New York. Listed are:
-Anthony Otteni, age 41, born Germany
-Mary A Otteni, age 34, born Germany
-Joseph Otteni, age 15, born Erie
-Mary A Otteni, age 13, born Erie
-Catharine Otteni, age 9, born Erie
-Anthony Otteni, age 7, born Erie
-Mally Otteni, age 4, born Erie
-Caroline Otteni, age 1, born Erie
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In 1864, Catherine married Lorentz "Lawrence" Demert.

New York Marriages, 1686-1980
Groom: Laurentium Diemert
Father: Antonii Diemert
Mother: Catherinae Bastiam

Bride: Catherinam Otteni
Father: Antonii Otteni
Mother: Mariae Annae Riedling
Marriage Date: 30 Mar 1864
Marriage Place: Saint Joseph Catholic Church, Buffalo, Erie, New York

Per the 1875 Erie County, New York Census, Catherine and Lawrence resided in Amherst Township, Erie County, New York. Listed are:
-Lawrence Diemert, age 40, born Germany
-Catherine Diemert, age 28, born Erie
-Mary Diemert, age 9, born Erie
-Caroline Diemert, age 7, born Erie
-Robert Diemert, age 3, born Erie
-Albert Diemert, age 1, born Erie

Per the 1900 U.S. Census, Catherine and Lawrence Demert resided in Amherst, Erie County, New York. Listed are:
-Lawrence Demert, age 66, born Oct 1833 France
-Katherine Demert, age 53, born Sep 1846 New York
-Robert Demert, age 28, born Jun 1861
-Albert Demert, age 24, born May 1876
-Lawrence Demert, age 22 born May 1878
-Louis Demert, age 20, born Aug 1879

In 1900, Lawrence and Catherine are listed as married for 35 years. Catherine is listed with 4 children born and 4 children living. Lawrence listed 1842 as his year of immigration to the United States.
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Catherine and Lawrence are known to have 7 children:
• Mary Demert Holler (1866-1948)
• Caroline Demert Beavers (1869-1945 )
• Robert Demert (1871-1930)
• Albert J. Diemert (1876-1928)
• Lawrence John Demert (1878-1945)
• Louis Demert (1879-1906)
• Daniel Demert (1884-1897)
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OBITUARY
Buffalo Evening News, Buffalo, New York, Wednesday, 15 Nov 1916, Page 2

DEMERT-At Williamsville, N. Y. November 13, 1916, Catherine (nee Ottney), wife of the late Lawrence Demert, aged 71 years, mother of Mrs. Frederick Holler, Mrs. Caroline Beavers, Robert, Albert and Lawrence Demert. Funeral from the family residence, Thursday morning at 8:30 o'clock and from SS Peter and Paul's church at 9 o'clock. Friends are invited to attend.