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Group 1A

Cathcart yDNA Group 1
Big 4 Cathcarts

Generation                        
  Big 4 Cathcarts William        
5G-GF           John        
4G-GF John1   Pearson  Samuel  Joseph (the spy)  
3G-GF James, Sr. Samuel, Sr. John McMunn James Joseph or Joseph, Jr ?  
2G-GF Charles2   George Hume, Sr. John Kerns William David John
G-GF John Sterling Thomas BM William Richard, Sr.3  

William Clayton		 Jesse Emerson John Stephen, Sr. James Allen Daniel John
GF Thomas M Samuel Lindsay, Sr. James Armstrong, Sr. Robert Spann, Sr. William Gordon William Albert Hugh A. John Oliver Archibald Beattie
Father James F. Samuel Lindsay, Jr. J A, Jr. RS2→RS3
*		 Hugh Chatham Silas Edward Leroy Charlie James Henry John Brock Norman Beatty
Individual John Thomas Cathcart GA Cathcart* JA Cathcart* RS Cathcart* PS Cathcart* HR  Cathcart* RD Cathcart*5   C. Cathcart*5   Bu Cathcart* Raymond Franklin Cathcart Ba. Cathcart*

Notes and Interpretations  (click here for legend)

  1. Group 1: John Thomas, GA, JA, and RS  all share John Cathcart as a Most Recent Common Ancestor (MRCA)
    1. This means that the most distant relationship between the four is 5th cousin (with RS being once removed)
    2. Some records indicate that this John's first name might be James.  Most importantly, he is the father of the "Big 4" Cathcarts, from whom all members of this line descend.
    3. There is overwhelming genealogical evidence/sourcing for this relationship.
    4. Although these four gentlemen are very close genealogically speaking, their genetic results are a bit confusing... see below.
  2. Group 1a: John Thomas and GA are 3rd cousins (sharing Charles Cathcart as a MRCA).
    1. They are 0/25 -1/37 genetically from each other
    2. When comparing results between the members of group 1a and group 1b, things get a bit complicated...
      1. John Thomas and JA & RS are -1/25, -3/37, -3/67, but we are known 5th cousins
        -  RS4 and John Thomas are actually 5th cousins, once-removed (that's why I've combined his father and grandfather in the box above him)
      2. GA shares the same one step genetic difference (-1/37) with two other participants to whom he has not been linked genealogically: HR and Gw
      3. However, GA is -1/25, -4/37 from JA and RS Cathcart... that is to say, he is closer genetically to HR and Gw (with whom he has no known genealogical connection) than he is to his two 5th cousins!  In fact, GA is more closely related to 12 other participants than he is to JA and RS—his fifth cousins.
  3. Group 1b: All share William Richard Cathcart, Sr. as MRCA
    1. 1b1: JA and RS are half 2nd cousins, once-removed (sharing William Richard Cathcart, Sr. as their MRCA).
      1. They are half-cousins as they each descend from one of William's two wives (who were also sisters themselves!)
      2. They match exactly at the 67-marker test level
      3. As stated in paragraph 2bi above, these two gentlemen are three steps distant at the 67-marker level (-3/67) from John Thomas (group 1a).  They are four steps distant at the 37 marker level (-4/37) with GA.
    2. 1b2 PS and RS4 Cathcart are 1st cousins, once removed (RS Cathcart being their MRCA).
      1. We are still awaiting the results of PS's 67-marker test before making more assumptions/predictions on what these yDNA results mean... the assumption is that he will match exactly with his two closest of his participating cousins.
  4. Results showing closest genetic relationships outside group 1
    1. John Thomas
      1. -2/67: Ba, RD, C, Bu, Raymond Franklin
      2. -3/67: HR, JA*, RJ, WJ, BG, RS* (* JA and RS mentioned above and with whom GA and I have a known genealogical relationship)
    2. GA
      1. -1/37: John Thomas,  HR, Gwen
      2. -2/37: Raymond Franklin, Ba, RD, RJ, BG, C, Bu
    3. JA and RS
      1. -5/67: Ba, RD, SL, C, Bu, Raymond Franklin
      2. -6/67: HR, RJ, WJ, BG, Gwen, RJ
  5. Click here for a more detailed discussion of the relationship between RD and C Cathcart

Legend

Proven | Likely | Conjecture | Common Ancestor | Patriarch/Group see group page

* Participant has not approved release of his name

If Available, Click   for Individual's page, and for outline descendancy chart

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