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[[File:Orion and Walburga Black.jpg|thumb|right|250px|[[Orion Black|Orion]] and [[Walburga Black]], the parents of [[Sirius Black|Sirius]] and [[Regulus Black]], were second cousins.]]
 
{{Quote|Marvolo, his son, Morfin, and his daughter, Merope, were the last of the Gaunts, a very ancient Wizarding family noted for a vein of instability and violence that flourished through the generations due to their habit of marrying their own cousins.|[[Albus Dumbledore]].|Harry Potter and the Half-Blood Prince}}
 
{{Quote|Marvolo, his son, Morfin, and his daughter, Merope, were the last of the Gaunts, a very ancient Wizarding family noted for a vein of instability and violence that flourished through the generations due to their habit of marrying their own cousins.|[[Albus Dumbledore]].|Harry Potter and the Half-Blood Prince}}
'''Inbreeding with pure-bloods''' is a common practice for elite wizarding families that uphold the tradition of marrying only pure-blood wizards of respected ancestry. It is noted that wizarding families are becoming more diverse as time passes as wizards begin to marry [[Half-blood]]s, [[Muggle-born]]s, and [[Muggle]]s. To keep with tradition in maintaining a purely wizard-blood family, families tend to marry within the family, particularly cousins. 
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'''Inbreeding with pure-bloods''' is a common practise for elite wizarding families that uphold the tradition of marrying only pure-blood wizards of respected ancestry. It is noted that wizarding families are becoming more diverse as time passes as wizards begin to marry [[half-blood]]s, [[Muggle-born]]s, and [[Muggle]]s. To keep with tradition in maintaining a purely wizard-blood family, families tend to marry within the family, particularly cousins. 
   
 
==The Black family==
 
==The Black family==
The [[House of Black]]'s family motto had always been "Toujours pur", which meant "Always Pure". Therefore, the family was strictly traditionalized to marry, if not extremely wealthy as their own family, respectable and noble families. The Black family took this motto to heart very seriously, and all family members who did not conform with the obsession to the pure-blood supremacy were disowned quickly. [[Squib]]s were also disowned.
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The [[House of Black]]'s family motto had always been "Toujours pur", which meant "Always Pure". Therefore, the family was strictly traditionalised to marry, if not extremely wealthy as their own family, respectable and noble families. The Black family took this motto to heart very seriously, and all family members who did not conform with the obsession to the pure-blood supremacy were disowned quickly. [[Squib]]s were also disowned.
   
In desperation to keep with the tradition, some would go to extremes to keep the tradition. An example of this are [[Walburga Black]] and [[Orion Black]]. The two were second cousins, as both their grandparents were siblings, and had married to keep tradition and eventually had two children together. 
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In desperation to keep with the tradition, some would go to extremes to keep the tradition. An example of this are [[Walburga Black]] and [[Orion Black]]; the two were second cousins, as both their grandparents were siblings, and had married to keep tradition and eventually had two children together. 
   
 
Due to the Black family tree tapestry large family tree of the Blacks, it is possible that related people marry or interact, not knowing of their relationship.
 
Due to the Black family tree tapestry large family tree of the Blacks, it is possible that related people marry or interact, not knowing of their relationship.
   
*[[Molly Weasley]] is the supposed niece of [[Ignatius Prewett]] (since being his niece justifies Sirius' statement that she is his cousin by marriage and not by blood, since being [[Lucretia Black]]'s daughter would have made her cousins of blood) and is technically a distant relative of the Wealseys even before marriage.
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==Inbreeding relationships==
*[[Harry Potter]] and [[Draco Malfoy]] are possibly second cousins once removed, as they might have the same ancestor, [[Cygnus Black II]].
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===Known relationships===
*[[Nymphadora Tonks]] and Draco are first cousins.
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*[[Victoire Weasley]] and boyfriend [[Teddy Lupin]] are fourth cousins once removed.
*[[Neville Longbottom]], [[Ronald Weasley]], [[Barty Crouch Jr.]] and [[Yaxley]] (the interrogator) could be related through the Black family.
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*[[Orion Black]] married his second cousin [[Walburga Black]]. The two are the parents of [[Sirius Black]] and [[Regulus Black]].
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*The [[House of Gaunt]] was known for marrying there cousins to maintain blood purity.
   
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===Possible relationships===
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*[[Harry Potter]] and wife [[Ginny Weasley]] are possibly third cousins.
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*[[Arthur Weasley]] and wife [[Molly Prewett]] are possibly second cousins by marriage once removed.
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*[[Molly Prewett]] is the supposed niece of [[Ignatius Prewett]] (since being his niece justifies Sirius' statement that she is his cousin by marriage and not by blood, since being [[Lucretia Black]]'s daughter would have made her cousins of blood) and is technically a distant relative of the Weasleys even before marriage.
 
==Side effects of inbreeding==
 
==Side effects of inbreeding==
 
In Muggle genetics studies, it is proven that inbreeding can lead to serious problems, even for [[Wizardkind|wizards]]. Notable effects that are seen in families are infertility (which would explain the extinction of the Black family) and disorders, both mental and physical.<ref>[http://en.wikipedia.org/wiki/Inbreeding Inbreeding]</ref> It is evident in many families (e.g. the [[House of Gaunt]] and notably insane [[Death Eater]]s of the Black family) that [[insanity]] is a common resultant.
 
In Muggle genetics studies, it is proven that inbreeding can lead to serious problems, even for [[Wizardkind|wizards]]. Notable effects that are seen in families are infertility (which would explain the extinction of the Black family) and disorders, both mental and physical.<ref>[http://en.wikipedia.org/wiki/Inbreeding Inbreeding]</ref> It is evident in many families (e.g. the [[House of Gaunt]] and notably insane [[Death Eater]]s of the Black family) that [[insanity]] is a common resultant.
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==References==
 
==References==
 
{{reflist}}
 
{{reflist}}
[[Category:Pure-bloods]]
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[[Category:Pure-blood supremacism]]
[[Category:Genetics]]
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[[Category:Procreation]]

Latest revision as of 23:12, August 31, 2015

Orion and Walburga Black

Orion and Walburga Black, the parents of Sirius and Regulus Black, were second cousins.

"Marvolo, his son, Morfin, and his daughter, Merope, were the last of the Gaunts, a very ancient Wizarding family noted for a vein of instability and violence that flourished through the generations due to their habit of marrying their own cousins."
Albus Dumbledore.[src]

Inbreeding with pure-bloods is a common practise for elite wizarding families that uphold the tradition of marrying only pure-blood wizards of respected ancestry. It is noted that wizarding families are becoming more diverse as time passes as wizards begin to marry half-bloods, Muggle-borns, and Muggles. To keep with tradition in maintaining a purely wizard-blood family, families tend to marry within the family, particularly cousins. 

The Black familyEdit

The House of Black's family motto had always been "Toujours pur", which meant "Always Pure". Therefore, the family was strictly traditionalised to marry, if not extremely wealthy as their own family, respectable and noble families. The Black family took this motto to heart very seriously, and all family members who did not conform with the obsession to the pure-blood supremacy were disowned quickly. Squibs were also disowned.

In desperation to keep with the tradition, some would go to extremes to keep the tradition. An example of this are Walburga Black and Orion Black; the two were second cousins, as both their grandparents were siblings, and had married to keep tradition and eventually had two children together. 

Due to the Black family tree tapestry large family tree of the Blacks, it is possible that related people marry or interact, not knowing of their relationship.

Inbreeding relationshipsEdit

Known relationshipsEdit

Possible relationshipsEdit

Side effects of inbreedingEdit

In Muggle genetics studies, it is proven that inbreeding can lead to serious problems, even for wizards. Notable effects that are seen in families are infertility (which would explain the extinction of the Black family) and disorders, both mental and physical.[1] It is evident in many families (e.g. the House of Gaunt and notably insane Death Eaters of the Black family) that insanity is a common resultant.

ReferencesEdit

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