Other Events and Attributes:

• Alt. Birth: 1830, Kentucky, United States
• Residence: 6 Sep 1850, Fleming County, Kentucky, United States
• Residence: 7 Aug 1860, Stratton Township, Edgar, Illinois, United States
• Residence: 12 Aug 1870, Elbridge Township, Edgar, Illinois, United States
• Residence: 9 Jun 1880, Prairie Township, Edgar, Illinois, United States

Notes:

Based on when Mathias married Margaret, it is assumed that William, Andrew, and Mary are Sarah's Children. However, in the 1860 Census we only find Elizabeth with her father and mother, or it could be I have the wrong census record for 1860.
According to the 1880 Census, Margaret was potentially married before she married Mathias. There are William P, John M and Hannah Preston living in the household and they are listed as step children. William P being born in 1862 in Kentucky, John M born in 1863 in Kentucky, and Hannah born in 1864. If the Marriage Record is correct on Margaret and Matthias, these cannot be his stepchildren by her. They were married in 1860. Or did he marry two Margaret's and the 1st one died? Doubtful.

Mathias married Margaret J. Mitchell on 7 Sep 1860 in Edgar County, Illinois, United States. Margaret was born in 1832 in Indiana, United States; and died. [Group Sheet] [Family Chart]

Mathias married Sarah before 1858. Sarah was born in 1835 in Virginia, United States; died between Aug 1860 and Sep 1860 in Illinois, United States. [Group Sheet] [Family Chart]

Other Events and Attributes:

• Residence: 12 Aug 1870, Elbridge Township, Edgar, Illinois, United States

Other Events and Attributes:

• Residence: 2 Aug 1870, Elbridge Township, Edgar, Illinois, United States

Other Events and Attributes:

• Residence: 2 Aug 1870, Elbridge Township, Edgar, Illinois, United States
• Alt. Birth: 1873, Illinois, United States
• Residence: 9 Jun 1880, Prairie Township, Edgar, Illinois, United States

Other Events and Attributes:

• Residence: 9 Jun 1880, Prairie Township, Edgar, Illinois, United States

Other Events and Attributes:

• Residence: 9 Jun 1880, Prairie Township, Edgar, Illinois, United States

Other Events and Attributes:

• Alt. Birth: 1859, Illinois, United States
• Residence: 7 Aug 1860, Stratton Township, Edgar, Illinois, United States
• Residence: 12 Aug 1870, Elbridge Township, Edgar, Illinois, United States

Notes:

In 1870 there is a child in the household of Matthias and Margaret that is 12 years old (born 1858). I believe this child should be listed as Elizabeth, as Elizabeth isn't even listed.

Other Events and Attributes:

• Residence: 12 Aug 1870, Elbridge Township, Edgar, Illinois, United States

Notes:

Andrew could be the son of Sarah or Margaret, it depends on when in 1860 he was born. If he was born in August or before, he is the son of Sarah, if it was in September or after he is Margaret's. Further research is needed to determine which mother is his.