Children:
- James Eaton Mateer was born 24 May 1844, Armstrong County, Pennsylvania; died 1926/1929.
- John Harvey Mateer was born 31 Jul 1846, Armstrong County, Pennsylvania.
- Dr. Robert M. Mateer was born 5 Oct 1848, Pine Township, Armstrong, Pennsylvania; died 18 Jun 1900, Shelocta, Indiana, Pennsylvania; was buried Elderton Cemetery, Armstrong County, Pennsylvania.
- Benjamin Franklin Mateer was born 5 Dec 1850, Armstrong County, Pennsylvania; died Aft 1914.
- Samuel S. Mateer was born 1 May 1853, , Armstrong, Pennsylvania.
- Annie Jane Mateer was born 25 Oct 1855, , Armstrong, Pennsylvania.
- Margaret Eaton Mateer was born 18 Mar 1858, , Armstrong, Pennsylvania; died 28 Jun 1910; was buried Ford City, Pennsylvania.
- Mary Elizabeth Mateer was born 10 Dec 1860, , Armstrong, Pennsylvania.
- 2. Ambrose M. Mateer was born 16 Jul 1863, Pine Township, Armstrong, Pennsylvania; died 25 Jun 1931, Pine Township, Armstrong, Pennsylvania.
- Alexander Montgomery Mateer was born 26 Oct 1867, , Armstrong, Pennsylvania; died Nov 1930, , Armstrong, Pennsylvania.
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