Most of this information was found on the Harry Potter Lexicon. We do not own any of the canon backgrounds. Just because a person does not have any canon children does not mean you cannot apply for an original character of theirs. Canon children are not only children of JK Rowling's, but also children that have been made by the Twenty-Four Years staff.
LUNA LOVEGOOD:
career; naturalist.
spouse; rolf scamander, career unknown.
residence; ottery st. catchpole.
canon children; none.
other family; father, xenophilius lovegood.
XENOPHILIUS LOVEGOOD:
career; editor of the quibbler/headmaster of hogwarts.
spouse; unknown, deceased.
residence; hogwarts school.
canon children; luna lovegood, graduate.
other family; none.
NEVILLE LONGBOTTOM:
career; herbology professor.
spouse; hannah abbott, leaky cauldron landlady.
residence; hogwarts (school year); leaky cauldron (summer/holidays).
canon children; none.
other family; augusta longbottom, retired.
TED LUPIN:
career; transfiguration professor.
spouse; victoire lupin (born weasley).
residence; hogwarts school.
canon children; none.
other family; remus/nymphadora lupin, deceased; bill weasley, gringotts worker; fleur weasley (born delacour), gringotts worker.
HANNAH ABBOTT:
career; leaky cauldron landlady.
spouse; neville longbottom.
residence; leaky cauldron.
canon children; none.
other family; mother, name unknown, deceased.
RONALD WEASLEY:
career; auror.
spouse; hermione granger.
residence; ottery st. catchpole.
canon children; hugo weasley, hogwarts student; rose weasley, hogwarts student.
other family; arthur weasley, misuse of muggle artefacts department; molly weasley, unemployed; [weasley family].
HERMIONE GRANGER:
career; head of magical law enforcement.
spouse; ronald weasley.
residence; ottery st. catchpole
canon children; hugo weasley, hogwarts student; rose weasley, hogwarts student.
other family; parents, names unknown, muggle dentists.
HARRY POTTER:
career; head of aurors.
spouse; ginerva weasley.
residence; grimmauld place, london.
canon children; james harry potter, hogwarts student; albus severus potter, hogwarts student; lily potter, hogwarts student.
other family; james potter, deceased; lily potter, deceased.
GINERVA WEASLEY:
career; daily prophet quidditch reporter.
spouse; harry potter.
residence; grimmauld place, london.
canon children; james harry potter, hogwarts student; albus severus potter, hogwarts student; lily potter, hogwarts student.
other family; arthur weasley, misuse of muggle artefacts department; molly weasley, unemployed.
VIKTOR KRUM:
career; bulgarian national quidditch seeker.
spouse; michelle omel, divorced; ivory mitchell, unemployed.
residence; london.
canon children; kevin oliver omel, hogwarts student, living with michelle omel; bella sophie davies, hogwarts student, living with cho chang and husband roger davies; erika wednesday krum, hogwarts student; eryk adam krum, hogwarts student.
other family; none.
extra; married and divorced with one child with michelle omel; one-night stand and child with cho chang; currently married to ivory mitchell with two children.
DRACO MALFOY:
career; hogwarts minister.
spouse; hilary jade.
residence; malfoy manor, england.
canon children; scorpius malfoy, hogwarts student.
other family; father, lucius malfoy, retired; mother, narcissa malfoy, unemployed.
If you would like to find out another canon's background, please ask a staff member and we will find out.