History Main / MagicalSeventhSon

* In ''Literature/TheSecretOfPlatform13'', Odge the hag is the seventh daughter of a seventh daughter. Her family is fairly disappointed that aside from having heterochromia and one blue tooth, she looks like a normal human girl and not a normal hag (no extra toes or long fingernails or the like).

* In [[BobHope Hope]] and [[BingCrosby Crosby's]] [[RoadTo ''Road to Bali'']], they sing "Hoot Mon", which has the lyric "The seventh son of the seventh son of a son-of-a-gun from [[TrrrillingRrrs Perrrrrrrrrth]]".

* In [[BobHope Hope]] and [[BingCrosby Crosby's]] [[RoadTo ''Road to Bali'']], they sing "Hoot Mon", which has the lyric "The seventh son of the seventh son of a son-of-a-gun from Perrrrrrrrrth".

** In ''Discworld/{{Sourcery}}'', we learn that the eighth son of a wizard becomes a super-powerful "sourcerer", a wizard that is actually a source of magic, and almost [[AGodAmI too powerful]] for the world to bear. (This is one of the reasons wizards are discouraged from having sex.)

* In ''Literature/TheLastApprentice'', being the seventh son of a seventh son is literally a job requirement to be a spook.

** In ''Discworld/{{Sourcery}}'', we learn that the eighth son of an eighth son of an eighth son becomes a super-powerful "sourcerer", a being in touch with the source of magic, and almost [[AGodAmI too powerful]] for the world to bear. (This is one of the reasons wizards are discouraged from having sex.)

* It doesn't come up as an important plot point in ''Literature/HarryPotter'', but according to WordOfGod, Ginny Weasley is the seventh child of a seventh child.

* Johnny Thunder, an early member of the ''JusticeSocietyOfAmerica'', got his powers from being the seventh son of a seventh son, born on the seventh hour of the seventh day of the seventh month of 1917.
* The villain Man-Witch from CommonGrounds is a deliberate case; when his mother found out her husband was a seventh son she decided to have seven sons to see if it worked. It did. Incidentally, it really is seven ''sons''; they had somewhere around fifteen children because girls kept messing up the math.

* In ''ErnestScaredStupid,'' Old Lady Hackmore says "you're the seventh son of the seventh son" when listing all the auspices that make Ernest TheChosenOne for fulfilling his ancestor's legacy and defeating Trantor the Troll once and for all. (It's not clear if she's being metaphorical or not, though, especially since she refers to him as ''the'' direct descendant of Phineas Worrell.)

* In the ''Literature/DaughterOfTheForest'', the first book in the ''Literature/TheSevenwatersTrilogy'', Sorcha is the seventh daughter of Lord Colum (himself a seventh son). Her six brothers are bound in a curse to be forever swans by her stepmother that only the seventh child can lift.

* A variant in the PiersAnthony novel FractalMode - Nona is the ninth born of the ninth generation, granting her the ability to have truer and stronger magic then other girls, and the potential to flip the magical patriarchy to a matriarchy. Which will flip again when there is born a male ninth of the ninth.

* The villain Man-Witch from CommonGrounds is a deliberate case; when her mother found out her husband was a seventh son she decided to have seven sons to see if it worked. It did. Incidentally, it really is seven ''sons''; they had somewhere around fifteen children because girls kept messing up the math.

* In Creator/PatriciaCWrede's ''Literature/FrontierMagic'', Lan is the seventh son of a seventh son, and so a natural magician. Others point out to Eff that she's a seventh daughter, even if she is a [[ThirteenIsUnlucky thirteenth child]]. The AlwaysMale part of the trope is averted by the series, as double-seventh daughters are also magically gifted.

* A variant in the PiersAnthony novel FractalMode - Nona is the ninth born of the ninth generation, granting her the ability to have truer and stronger magic then other girls, and the potential to flip the magical patriarchy to a matriarchy. Which will flip again when there is born a ninth of the ninth son.

* In the ''Literature/DaughterOfTheForest'', the first book in the ''Literature/TheSevenwatersTrilogy'', Sorcha is the seventh daughter of Lord Colum. Her six brothers are bound in a curse to be forever swans by her stepmother that only the seventh child can lift.
** Oonagh's son Ciaran is the seventh son of a seventh son. Even Sorcha herself comments on this when she hears about the birth.

** In ''Discworld/EqualRites'', Eskarina is the eighth ''child'' of an eighth son, which [[GenderRestrictedAbility isn't supposed to work]], but somehow it does. Women are supposed to be witches, not wizards, but Eskarina is simply too wizardy.

* In ''[[http://bythebook.smackjeeves.com/comics/1642640/pg6/ By the Book]]'' Septimus Volk first mentions that he's a seventh son [[http://bythebook.smackjeeves.com/comics/1642640/pg6/ when explaining why]] he's somewhat short on funds despite being of noble birth. The magical part isn't really mentioned until he takes [[RPGMechanicsVerse a level of wizard]] and casts an [[http://bythebook.smackjeeves.com/comics/1865730/pg39/ unusually powerful]] MagicMissile.

* In the SoapOpera ''DaysOfOurLives'', a shadowy crime lord called "The Phoenix" claims to be the seventh son of a seventh son and to have magical powers.

The number seven is often [[RuleOfSeven considered magical]], and in [[OralTradition folklore]], the seventh son of a seventh son is often considered to have inherent magical powers like [[{{Seer}} second sight]]. In fiction, and sometimes song, this is often shortened to just the seventh son, even though seventh sons are so common that this makes little sense.

* Taken UpTo Eleven in Creator/OrsonScottCard's ''Literature/TheTalesOfAlvinMaker''. Alvin is not only a seventh son, he is the seventh son of a seventh son, his parents' thirteenth child, and to top it all off was born with a caul, and is a powerful "maker"--a rare and powerful form of magic. The first novel in the series is even named ''Seventh Son''.

* The villain Man-Witch from CommonGrounds is a deliberate case; when her mother found out her husband was a seventh son she decided to have seven sons to see if it worked. It did