DNA results and discussions

Click  Arrow on browser to return back to previous page

 to bottom of page

Results of Genetic Test on Peacock families

1. Introduction 

In inheritance terms a father passes on his Y-Chromosome  to his son, who in turn passes it on to future generations of his male descendants.  This Y-chromosome  remains virtually unchanged for hundreds of years.  

Thus if two present day males have the same Y-chromosome, then they will be related to each other, and have  a common ancestor, maybe hundreds of years ago.

2.    The purpose of the Peacock DNA test.

The purpose of the test was to see if John Peacock (1813-1896) was related to the other Peacocks in Matching at that time.  There is no baptism record for this John Peacock, so it is unclear who his his parents were.

It is possible that he was an orphan, or was illegitimate, and was adopted by a Peacock family,  in which case he would have a non-Peacock father and would not inherit the Peacock Y-Chromosome.

To prove that John Peacock (1813-1896)  was a 'true' Peacock, two present day Peacocks were DNA tested.

The first person was Alan Peacock who is a direct descendant of John Peacock (1813-1896).

The second person tested was Leslie C. Peacock who is not descended from John Peacock (1813-1896), but from John Peacock (1738-?).

3.    Summary of the DNA results

The DNA results showed that the two people are at least 99% sure of being related, even if they had different surnames and came from different parts of the country.   If one considers that they have the same Peacock surname and originate from the same village, then it is certain that they are related.

The chart below shows the potential relationship of these two Peacocks:


Relationship 1


The above chart is derived from baptism registers.   The only missing gap is that we have not found the baptism of John (1813-1896) but have assumed that his father was John Peacock (1766-1829). 

On the basis of the DNA results, and all the other circumstantial evidence (to be discussed in the other sections), it is reasonable to say that John Peacock (1813-1896) is the son of John Peacock (1766-1829), not merely the ‘assumed’ son. 

 (A note of caution must be introduced here.  It is possible that John (1813-1896) has a more distant ancestor and that he arrived in Matching by chance, say as an orphan of Peacock parentage.   However, this seems very unlikely when one considers the other evidence).




to top of page