Cousin relationships between British monarchs and consorts

The British royalty often married within the same specific class and social group, historically for influence in affairs of state or to ally with a foreign power. As a result, British monarchs and their consorts can be related by blood. The handful of first-cousin marriages was not out of the norm for their time.

The tables show the closest cousin relationship (1st, 2nd, 3rd, ...) between the sovereigns and their spouses and the closest common ancestor.

England[edit]

Insufficient information is known concerning the spouses of the Anglo-Saxon and Danish kings of England to enable their relationships, if any, to be determined.

Kings of England
STATUS	Monarch	Spouse	Cousin	Generations removed	Closest common ancestor ^[1]
King	William the Conqueror	Matilda of Flanders	3	1	Fulk II, Count of Anjou
King	William II	never married	---
King	Henry I Beauclerc	Matilda of Scotland	7	0	Alfred the Great
		Adeliza of Louvain	4		Mathilde von Sachsen
King	Stephen	Matilda of Boulogne	4	1	Mathilde von Sachsen
Lady of the English	Matilda	Henry V, Holy Roman Emperor not a consort	2	2	Gisela of Swabia
		Geoffrey Plantagenet, Count of Anjou not a consort	4	1	Richard I, Duke of Normandy
King	Henry II	Eleanor of Aquitaine	3		Ermengarde of Anjou, Duchess of Burgundy
King died before father	Henry the Young King	Margaret of France	4		Robert I, Duke of Burgundy
King	Richard I (Lionheart)	Berengaria of Navarre	4		Robert I, Duke of Burgundy
King	John I	Isabel, Countess of Gloucester not a consort	2		Henry I of England
		Isabella of Angoulême	4	1	Roger de Montgomerie, 1st Earl of Shrewsbury
King	Henry III	Eleanor of Provence	4		Umberto II, Count of Savoy
King	Edward I	Eleanor of Castile	2	1	Henry II of England
		Margaret of France	1	1	Beatrice of Savoy
King	Edward II	Isabella of France	2	1	Beatrice of Savoy
King	Edward III of Windsor	Philippa of Hainault	2		Philip III of France
King	Richard II	Anne of Bohemia	4		Henry III, Duke of Brabant
		Isabella of Valois	3		Charles, Count of Valois
King	Henry IV of Bolingbroke	Mary de Bohun not a consort	2		Henry, 3rd Earl of Lancaster
		Joan of Navarre	3		Philip IV of France
King	Henry V	Catherine of Valois	3	1	Charles, Count of Valois
King	Henry VI	Margaret of Anjou	3		John II of France
King	Edward IV	Elizabeth Woodville	6	1	Blanche de Brienne, Baroness Tingry
King	Edward V	murdered as a child	---
King	Richard III	Anne Neville	1	1	Joan Beaufort, Countess of Westmorland
King	Henry VII	Elizabeth of York	3		John of Gaunt, 1st Duke of Lancaster
King	Henry VIII	Catherine of Aragon	3	1	John of Gaunt, 1st Duke of Lancaster
		Anne Boleyn	5	1	Eleanor of Lancaster
		Jane Seymour	5		Philippa, 5th Countess of Ulster
		Anne of Cleves	5		Elisabeth of Sicily, Duchess of Bavaria
		Catherine Howard	5	1	Eleanor of Lancaster
		Catherine Parr	3	1	Joan Beaufort, Countess of Westmorland
King	Edward VI	never married	---
Queen (unofficial)	Lady Jane Grey	Lord Guilford Dudley	3	1	Sir Edward Grey, 1st Lord Ferrers (of Groby)
Queen	Mary I	Philip II of Spain	1	1	Isabella I of Castile
Queen	Elizabeth I	never married	---

Scotland[edit]

Prior to the 11th century, insufficient information is known of the wives of Scottish kings to allow their relationship to their spouses to be determined.

Monarchy of Scotland
STATUS	Monarch	Spouse	Cousin	Generations removed	Closest common ancestor
King	Malcolm III	Ingibiorg Finnsdottir	no known relation
		Margaret of Wessex	no known relation
King	Donald III	known to have children, no mother mentioned	---
King	Duncan II	Ethelreda, daughter of Gospatric	2		Crínán of Dunkeld
King	Edgar	never married	---
King	Alexander I	Sybilla of Normandy	6		Hugh II, Count of Nordgau
King	David I	Maud, Countess of Huntingdon	no known relation
King	Malcolm IV	never married	---
King	William I the Lion	Ermengarde de Beaumont	4		Robert I, Duke of Normandy
King	Alexander II	Joan of England	3		Henry I of England
		Marie de Coucy	3	1	Hugh I, Count of Vermandois
King	Alexander III	Margaret of England	4		Henry I of England
		Yolande of Dreux	4	1	Robert I, Count of Dreux
Queen (unofficial)	Margaret, Maid of Norway	never married	---
King	John Balliol	Isabella de Warenne	4		William de Warenne, 2nd Earl of Surrey
King	Robert the Bruce	Isabella of Mar	6	1	Duncan I of Scotland
		Elizabeth de Burgh	3	1	William Marshal, 1st Earl of Pembroke
King	David II	Joan of The Tower	6		Henry I of England
		Margaret Drummond	no known relation
King	Robert II	Elizabeth Mure	4	1	William Comyn, Lord of Badenoch
		Euphemia de Ross	3	1	William Comyn, Lord of Badenoch
King	Robert III	Anabella Drummond	no known relation
King	James I	Joan Beaufort	5	1	John Fitzgeoffrey
King	James II	Mary of Guelders	4	1	William I, Count of Hainaut
King	James III	Margaret of Denmark	5		Louis IV, Holy Roman Emperor
King	James IV	Margaret Tudor	3		John Beaufort, 1st Earl of Somerset
King	James V	Madeleine of Valois	3	1	Adolph I, Duke of Cleves
		Mary of Guise	3		Arnold, Duke of Guelders
Queen	Mary I	Francis II of France	3		John VIII, Count of Vendôme
		Henry Stuart, Lord Darnley	1		Margaret Tudor
		James Hepburn, 4th Earl of Bothwell	3	1	Joan Beaufort, Queen of Scots

Great Britain[edit]

Monarchs of England and Scotland
STATUS	Monarch	Spouse	Cousin	Generations removed	Closest common ancestor
King	James VI & I	Anne of Denmark	3	1	Christian I of Denmark
King	Charles I	Henrietta Maria of France	3	1	Francis, Count of Vendôme
King	Charles II	Catherine of Braganza	5		Isabella I of Castile
King	James II & VII	Anne Hyde not a consort	9	1	Eleanor of Lancaster
		Mary of Modena	3	1	Cosimo I de' Medici, Grand Duke of Tuscany
Co-Monarchs	Mary II	William III & II	1		Charles I of England
Queen	Anne	Prince George of Denmark	2	1	Frederick II of Denmark
Queen	Anne	Prince George of Denmark	2	1	Frederick II of Denmark
King	George I	Sophia Dorothea of Celle	1		George, Duke of Brunswick-Lüneburg
King	George II	Caroline of Ansbach	3	1	John George, Elector of Brandenburg
King	George III	Charlotte of Mecklenburg-Strelitz	2	2	Adolf Frederick I, Duke of Mecklenburg
King	George IV	Maria Fitzherbert (marriage declared invalid)
		Caroline of Brunswick	1		Frederick, Prince of Wales
King	William IV	Adelaide of Saxe-Meiningen	3	1	Ernest I, Duke of Saxe-Gotha
Queen	Queen Victoria	Albert, Prince Consort	1		Francis, Duke of Saxe-Coburg-Saalfeld
King	Edward VII	Alexandra of Denmark	3	1	Duke Louis of Mecklenburg-Schwerin
King	George V	Mary of Teck	2	1	George III of the United Kingdom
King	Edward VIII	Wallis Warfield Simpson not a consort	no known relation
King	George VI	Elizabeth Bowes-Lyon	13		Henry VII of England
Queen	Elizabeth II	Prince Philip, Duke of Edinburgh	2	1	Christian IX of Denmark

Other royal marriages[edit]

Marriages not of monarchs but other closely related people to the monarch. The marriages from previous centuries are shown to connect missing generations.

Other Members of Royal Family Britain and the UK
STATUS	Name	Spouse	Cousin	Generations removed	Closest common ancestor
Princess	Marjorie Bruce	Walter Stewart, 6th High Steward of Scotland	4	1	Walter Stewart, 3rd High Steward of Scotland
Queen of Bohemia	Elizabeth Stuart	Frederick V, Elector Palatine	4		Magnus II, Duke of Mecklenburg
Duchess	Sophia of Hanover	Ernest Augustus, Elector of Brunswick-Lüneburg	2	1	Christian III of Denmark
Prince of Wales	Frederick	Princess Augusta of Saxe-Gotha	3	1	John II, Duke of Saxe-Weimar
Prince	Edward, Duke of Kent and Strathern	Princess Victoria of Saxe-Coburg-Saalfeld	3	1	Frederick I, Duke of Saxe-Gotha-Altenburg
Prince of Wales	Charles	Diana Spencer	7	1	William Cavendish, 3rd Duke of Devonshire
		Camilla Shand Parker Bowles	9	1	Henry Cavendish, 2nd Duke of Newcastle-upon-Tyne
Prince	Edward	Sophie Rhys-Jones	11	1	Nicholas St. John
Prince	William	Catherine Middleton	11^[2]^[3]^[4]	1	Sir William Blakiston

Windsor marriages[edit]

Prince Charles' first proposal and the only one before Diana, was to his 2nd cousin, Amanda Knatchbull. She and her husband were invited to his eventual marriage to Camilla Parker Bowles in 2005.^[5]

References[edit]

↑ Roglo Genealogical Database website
↑ Cracroft-Brennan, Patrick (22 July 2013). "How royal is the royal baby?". Channel 4. Retrieved 11 October 2013. 'This ups the game a little – making the pair 11th cousins once removed.'
↑ Turner, Robin (31 July 2013). "Prince George related to Llywelyn the Great, claims genealogist". WalesOnline. Media Wales. Retrieved 13 October 2013. 'This means that Prince George's parents William and Kate are related to each other through Edward IV'
↑ Child, Christopher Challender (Fall 2011). "A Gratifying Discovery: Connecting Catherine, Duchess of Cambridge, to Sir Thomas Conyers, 9th Bt. of Horden, Durham" (PDF). American Ancestors. New England Historic Genealogical Society. 12 (4): 35–36. Retrieved 15 October 2013.
↑ "Charles Invites Four Exgirlfriends to Wedding".

Sources[edit]

Duncan, A. A. M., The Kingship of the Scots 842–1292: Succession and Independence. Edinburgh University Press, Edinburgh, 2002. ISBN 0-7486-1626-8 Search this book on .

This article "Cousin relationships between British monarchs and consorts" is from Wikipedia. The list of its authors can be seen in its historical. Articles copied from Draft Namespace on Wikipedia could be seen on the Draft Namespace of Wikipedia and not main one.

[1] Roglo Genealogical Database website

[2] Cracroft-Brennan, Patrick (22 July 2013). "How royal is the royal baby?". Channel 4. Retrieved 11 October 2013. 'This ups the game a little – making the pair 11th cousins once removed.'

[3] Turner, Robin (31 July 2013). "Prince George related to Llywelyn the Great, claims genealogist". WalesOnline. Media Wales. Retrieved 13 October 2013. 'This means that Prince George's parents William and Kate are related to each other through Edward IV'

[4] Child, Christopher Challender (Fall 2011). "A Gratifying Discovery: Connecting Catherine, Duchess of Cambridge, to Sir Thomas Conyers, 9th Bt. of Horden, Durham" (PDF). American Ancestors. New England Historic Genealogical Society. 12 (4): 35–36. Retrieved 15 October 2013.

[5] "Charles Invites Four Exgirlfriends to Wedding".

[1]

[2]

[3]

[4]

[5]