Willoughby DNA Results

Date: [unknown] [unknown]
Location: [unknown]
Surname/tag: willoughby

Contents 1 Introduction 2 Autosomal DNA (atDNA) 3 Y DNA 4 Mitochondrial DNA (mtDNA)

Introduction

This page is intended to be a link between WikiTree and the Willoughby DNA Project.

Autosomal DNA (atDNA)

Method:

1. For each member of the project, find the total shared centimorgans (cMs) with every other member of the project. Unfortunately the results will not include shared cMs less than the threshold applied by FamilyTreeDNA.
2. Set maximum cM equal to 7440 (or 2 x maximum shared cM found above if greater).
3. Create distance matrix filled with NaN
4. For each member populate matching elements with log10(max_cM/shared_cM)/log10(2).
5. Drop all rows/columns that have no matches
6. Fill the diagonal (member=member) with 0
7. Replace all remaining NaN with log10(7440)/log10(2)

We should now have a symmetric distance matrix where each member is a distance of 0 from themselves, ~1 from their parent, ~2 from their grandparent, etc.

Use UPGMA (average) linkage to cluster results. Display as dendrogram or clustered heatmap.

Y DNA

Haplogroup	Paternal Ancestor	Notes
E-FTA30281	Charles Willoughby (1799-1877)
E-FTA30281	George Willoughby (1755-1800)
E-M35	Thomas Willoughby (1824-1902)
E-M35	Isaac Willoughby (1750-1850)	Probably Isaac Willoughby (abt.1750-abt.1851)
E-M35	John Willoughby (1702-1752)	Probably John Willoughby Sr. (1703-1762)
E-M35	Leonidas Lafayette McLemore (1859-1910)
G-FT394415	Drewry M Bowman (1780-1850)	Possibly related to Drury Bowman (abt.1734-1805)
G-FT394415	William Leroy Bowman (1853-1931)
I-BY202349	Frederick Willoughby (1811-)
I-M170	John Cockrell (1732-1799)
I-M223	Andrew C Willoby (1812-1880)
I-M223	James Wells (1640-1682)
I-M253	Aaron Willoughby (1765-1860)	Possibly Aaron Willoughby (abt.1765-)
I-M253	Aaron Willoughby (1775-1860)	Aaron Willoughby (abt.1765-). Is this same as above?
I-M253	Hugh de Willoughby (1175-1235)	Possibly Hugh (Willoughby) de Willoughby (abt.1195-bef.1227). Multiple project members claim this heritage, but only one has tested Y.
R-BY2682	Henry Willoughby (1759-)
R-BY45051	George Willoughby (1750-1800)
R-FGC24444	Matthew Gill (1839-1880)
R-FTC26461	William Blakey Willoughby (abt.1825-1863)	Two BigY testers descended from Michael Ernest Willoughby (1880-1919). Closest known tester is descendant of Richard Foggy, below.
R-L563	James Nuckolls (1670-1727)
R-M269	John H Willoughby (1849-)
R-M269	Joseph Waites (1811-)
R-M269	Richard Foggy (1834-)	One tester at 37 markers. Needs BigY upgrade.
R-M269	Rodolphus Willoughby (1792-1869)
R-Y6949	Joseph Willoughby (1690-1750)

Mitochondrial DNA (mtDNA)

I have not yet started a mtDNA analysis. Thoughts? Volunteers?