X DNA Family Links

Gender is determined by the X and Y sex chromosomes: chromosome pair number 23. Males inherit a Y chromosome from their fathers and an X chromosome from their mothers, so all their X-DNA is inherited from their mother. Females inherit an X chromosome from both their fathers and their mothers.

A mother contributes an X chromosome that is usually a recombined mix of both of her X chromosomes (but not always). Fathers contribute their whole X chromosome intact to their daughters.

Because some X chromosomes pass down intact (through males) and skip a generation without recombining, and others are recombined (through females), the average expected percentage of shared X-DNA at each generation varies depending on the branch of the pedigree chart.


This is a list of all my ancestors I can inherit X-DNA from, back to 4th GGP.

Paternal Line – Smy Side Only

  • GP – Violet SMY (50%)
  • 1xGGP – Alfred SMY & Hilda EASTELL (25% each)
  • 2xGGP – Maria BAXTER (25%)
  • 2xGGP – Robert EASTELL & Jane JACKSON (12.5% each)
  • 3xGGP – John BAXTER Catherine COOPER (12.5% each)
  • 3xGGP – Charlotte OLDMAN (12.5%)
  • 3xGGP – William JACKSON & Louise TAYLOR (6.25 each)
  • 4xGGP – Susanna WRIGHT (12.5%)
  • 4xGGP – John COOPER & Sarah HORNE (6.25% each)
  • 4xGGP – James OLDMAN & Hannah CUTTING (6.25% each)
  • 4xGGP – Margaret KITSON (6%)
  • 4xGGP – Benjamin TAYLOR & Martha LEWIS (3% each)

Maternal Line – Mayhew Side

  • GP – Joseph MAYHEW (25%)
  • 1xGGP – Amelia COWLEY (25%)
  • 2xGGP – Joseph COWLEY & Eliza KEECH (12.5% each)
  • 3xGGP – Maria COX (12.5%)
  • 3xGGP – James KEECH & Joannah COTTON (6.25% each)
  • 4xGGP – Samuel COX & Elizabeth KEECH (6.25% each)
  • 4xGGP – Mary BURRIDGE (6%)
  • 4xGGP – Reuben COTTON & Rachel STOCK (3%)

Maternal Line – Elkins Side

  • GP – Daisy ELKINS (25%)
  • 1xGGP – John ELKINS & Alice GAUNT (12.5% each)
  • 2xGGP – Lucy GODDARD (12.5%)
  • 2xGGP – William GAUNT & Caroline ANDREW (6.25% each)
  • 3xGGP – Thomas GODDARD & Lucy MINES (6.25% each)
  • 3xGGP – Martha LYMAGE (6%)
  • 3xGGP – James ANDREW & Sarah HOOK (3% each)
  • 4xGGP – Elizabeth FOLEY (6%)
  • 4xGGP – John MINES & MARY (unknown) (6.25% each)
  • 4xGGP – John LYMAGE & Mary DICKENSON (6.25% each)
  • 4xGGP – Unknown Female (6%)
  • 4xGGP – Henry HOOK & Lydia LUDDINGTON (3% each)