- Sirius Black: "Any time the family produced someone halfway decent they were disowned. I see Tonks isn't on here. Maybe that's why Kreacher won't take orders from her — he's supposed to do whatever anyone in the family asks him."
- Harry Potter: "You and Tonks are related?"
- Sirius Black: "Oh, yeah, her mother Andromeda was my favourite cousin."
- — Harry Potter and Sirius Black on the Tonks and Black families[src]
Tonks is the surname of a family that was originally Muggle. Ted Tonks, however, was a Muggle-born wizard and he married a pure-blood witch, Andromeda Black (for which Andromeda was disowned), with whom he had one child, Nymphadora Tonks.
The Tonks family is related to the Lupin, Black, Malfoy, and Lestrange families. They are distantly related to the Potter, Weasley, Peverell, Prewett, Crabbe, Riddle, Slytherin, Crouch, and Gaunt families. They may possibly also be related to the Longbottom and Abbott families. The female line continues through Edward Remus Lupin. During the Second Wizarding War the family supported Albus Dumbledore and Harry Potter.
Not much is known about the earl history of the Tonks family. Sometime in the late 1960s or early 1970s Muggle-born Ted Tonks married Andromeda Black after thry graduated from Hogwarts School of Witchcraft and Wizardry. Because of this marriage Andromeda was disowned by her family. In 1973 they had a daughter and their only child Nymphadora Tonks.
First Wizarding War
It can be assumed that during the First Wizarding War that the Tonks family supported the Order of the Phoenix, but were not actual member just allies. And were relieved with Lord Voldemort's first defeat at the hands of Harry Potter in 1981.
Between the wars
In 1984 Nymphadora began her education at Hogwarts were she was Sorted into Hufflepuff house, during the Sorting Ceremony. During her time at school she was not all-together the best behaved. Despite her behaviour, Tonks achieved good marks on her exams and qualifyed for Auror training when she left school in 1991. This means that she presumably took Defence Against the Dark Arts, Transfiguration, Charms, Potions, and another subject in sixth and seventh year. She earned 'Outstanding' or 'Exceeds Expectations' on all of her N.E.W.T.s Being the daughter of the ostracised Andromeda Tonks, she was rejected by the supremacists of the House of Black.
Undergoing three years of Auror training under the tutelage of Alastor Moody, Tonks's natural metamorphic abilities allowed her to easily pass the Concealment and Disguise portion of the training without doing any work for it at all. However, her clumsiness gave her trouble with the Stealth and Tracking portion of the course, which she almost failed. Tonks qualified fully as an Auror in 1994. It was most likely that her parents were proud when she was appointed as a full-fledged Auror.
Second Wizarding War
The Tonks family supported the Order of the Phoenix during the Second Wizarding War, though only Nymphadora Tonks was an actual member. Shortly after marrying Remus Lupin, she became pregnant and stayed at her parents' home with her mother, while her father was forced to go on the run to avoid the Muggle-Born Registration Commission. Ted was killed by Snatchers in 1998, and Nymphadora and her husband died fighting in the Battle of Hogwarts, leaving their infant son in his maternal grandmother's care.
|Ted Tonks||a Muggle-born wizard killed by Snatchers in 1998|
|Andromeda Tonks (née Black)||a pure-blood witch, sister of Bellatrix Lestrange and Narcissa Malfoy, wife of Ted|
|Nymphadora Lupin (née Tonks)||daughter of Ted and Andromeda, wife of Remus Lupin, mother of Ted Remus Lupin, killed by Bellatrix Lestrange during Battle of Hogwarts|