Mathias Coats

1774 - 1816  (42 years)

• Name	Mathias Coats  [1, 2]
  Birth	6 May 1774	PA
  Gender	Male
  Death	6 May 1816	Of Northern Liberties, Philadelphia, PA
  Person ID	I13620	Ancestrees
  Last Modified	3 Mar 2026

  
  

  Father	Zephaniah Swann,   b. 1740, MD
  Relationship	natural
  Mother	Mary Coats,   b. 26 Sep 1749, Egg Harbor, Hunterdon, NJ d. Yes, date unknown
  Relationship	natural
  _MARRIED	N
  Family ID	F2485	Group Sheet  |  Family Chart

  
  

  Family	Ann Lord,   b. Abt 1782   d. 8 Oct 1819, Of Northern Liberties, Philadelphia, PA (Age 37 years)
  Marriage	Abt 1797
  Children	1. Matilda Coates,   b. 29 Jun 1804   d. 12 Aug 1806 (Age 2 years)  [Father: natural]  [Mother: natural]   2. Mathias C. Coates, Jr.,   b. 27 Nov 1808, Of Northern Liberties, Philadelphia, PA d. Jan 1829 (Age 20 years)  [Father: natural]  [Mother: natural]   3. Asa Coates,   b. 28 Apr 1800, , , NY, Usa? d. Yes, date unknown  [Father: natural]  [Mother: natural]   4. Benjamin R. Coates,   b. 9 Jan 1811   d. 15 Nov 1814 (Age 3 years)  [Father: natural]  [Mother: natural]   5. Rebecca Ann Turpin Coates,   b. 25 May 1815   d. 1816 (Age 0 years)  [Father: natural]  [Mother: natural]   6. Sarah A. Coats,   b. 22 May 1798   d. Aug 1871 (Age 73 years)  [Father: natural]  [Mother: natural]   7. Maria Coats,   b. 28 May 1802   d. 21 Apr 1888, Philadelphia, Philadelphia, Pennsylvania, USA (Age 85 years)  [Father: natural]  [Mother: natural]   8. John Richard Coates,   b. 17 Oct 1806, , Augusta, VA d. 22 Aug 1880, Philadelphia, Philadelphia, Pennsylvania, USA (Age 73 years)  [Father: natural]  [Mother: natural]   9. Edmund Leven Sneed Coats,   b. 15 May 1813   d. 23 Jun 1849, Philadelphia, Philadelphia, Pennsylvania, USA (Age 36 years)  [Father: natural]  [Mother: natural]
  Family ID	F4584	Group Sheet  |  Family Chart
  Last Modified	3 Mar 2026

  
  

• Notes

  Mathias is living in Northern Liberties in Philadelphia, PA in the 1810 census with his wife, children and a likely mother or mother-in-law. (EL) He went by the nickname of Mattie when he was deeded land by his future father-in-law, Asa. In an 1880 census his daughter Maria says her father was born in Pennsylvania. He was a brickmaker by trade.</line><line /><line> In many 2nd hand genealogies, Mathias is listed as the brother to David and the son of Stephen Marmaduke Coates. However, an outstanding researcher, Linda Merlino and myself have not been able to find any 1st hand evidence of a Stephen Marmaduke Coates or his wife Polly McNutt in any 1st hand document. Their names are not carried down in this family line and it is a family line that always carries at least one of the parents names also.</line><line /><line> Because Mathias was a brickmaker in Philadelphia as were many of his descendants, it is theorized that he was descended from the William and Joan Sisom Coats who had 3 sons whom were brickmakers in early Philadelphia by some of his descendants. So far, YDNA is not backing that up. Two testers descended from Mathias are not related to a descendant from Thomas, son of William and Joan Sisom Coates. This is not a certain conclusion until we get more YDNA testers from William and Joan Sisom Coates' sons. None of these testers are related to the Marmaduke and Mary Coate Coppock group proving once and for all that Mathias is not the grandson of Marmaduke and Mary Jane Coppock Coate through an unproven son named Stephen Marmaduke Coate.</line><line /><line> Via an intensive study of autosomal Dna evidence on Gedmatch, I have now helped cousin, Carol Coates, determine via 4 triangulations between her father and descendants of Marmaduke and Sarah Mathias Coates that he was the daughter of their daughter Mary Coates born the same year her father died. Because his last name is the same as hers, it suggests he was born out of wedlock before she married and had children with a Mr. Swann. We definitely know that he is the son of Mary Coates, d. of Marmaduke and Sarah Mathias Coate. This is a line that is now verified back to the 1500's in Somerset, England via YDNA and more recently in this country by autosomal DNA.

  
  

• Sources

  [S309] Susan Bailey to Linda Coate Email dated Nov 26, 1997 at haneyl@courant.infi.net (now changed to baileywyck@mail.snet.net (C-1625????, 1636). [S513] Loren Little to L. Dudick Email letters dated 1999 at Loren.Little@worldnet.att.net C-2216E.