Willem III "the Good"  Count of Holland and Hainault 1286=1337 + Countess Jeanne de Valois Capet ...William III de Avesnes and Theodore Leland Durgan are 7th cousins 16 times removed. Their common ancestors are William 1 The Conqueror and Matilda of Flanders.

Philippa of Holland + Edward III 1314-1369.. Edward III Plantagenet and Theodore Leland Durgan are 3rd cousins 16 times removed.

John of Gaunt Duke of Lancaster 1340-1399 + Catherine (Swynford) Roet
Theodore Leland Durgan and John of Gaunt Plantagenet are 4th cousins 15 times removed. .

Joan Beaufort 1379-1440 + Robert Ferrers.. Joan Beaufort and Theodore Leland Durgan are 5th cousins 14 times removed. .

Mary Ferrers Lady of Oversley 1394-1457+ Ralphe Neville

John Nevill, of Oversley -1482+ Elizabeth Newmarch

Joane Nevill, of Oversley+ Sir William 1 Gascoigne

Sir William 2 Gascoigne -1487+ Lady Margaret Percy

Elizabeth Gascoigne -1539 + Sir George Tailboys

Anne Tailboys, of Kyme + Sir Edward Dymoke

Frances Dymoke -1611+ Sir Thomas Windebank

Mildred Windibank 1584-1630 + Robert Reade

Col. George Reade Acting Governor of Virginia 1608-1674 +Elizabeth Martiau
Mildred Reade -1694 + Col. Augustine Warner

Mildred Warner 1671- + Captain Lawrence Washington

Capt. Augustine Washington 1694-1743 + Mary Ball

George Washington 1st President of The USA 1732-1799
Spouse Martha Dandridge her second husband.. Her first husband was Daniel Parke Custis

+ 6 siblings including Betty Washington + Fielding Sr Lewis who's son Laurance married Eleanor Nellie Parke Custis daughter of John Parke(Jack) Custis (son of Martha Dandridge) and wife Eleanore Nelly Calvert which makes the old Durg a Cousin of both George Washington and Meriwether Lewis..
George Washington and Theodore Leland Durgan are 18th cousins 1 time removed. .