Honestly, it didn't even click until I started trying to put everyone in the same drawing.
Anyway, bit of a line-up for these characters as I slowly start hammering them into actual people, and figuring out where they fit in a story. So, from right-to-left:
Australian born to British parents, Henry met Laeticia's mother during a tenure with the French Foreign Legion, an organisation he eventually took a discharge from after Lettie's birth. As a result of his service he is "French by spilled blood", allowing him rights as a French national, something which has allowed him to take up running a small vineyard. While completely non-magical, he has a practical, pragmatic, do-er sort of personality, is quite friendly and caring with a relaxed, outgoing, temperament. As such he has a habit of, much to Lettie's chagrin (and that of her mother before her), "bringing home strays"... which is how Mathilde was introduced to the household.
He is a widower and, while he doesn't show it for his daughter's sake, still misses his wife intensely. In relation to that, he is both wary and cautiously supportive of his daughter's urge to find out what happened to her mother, and as such tends to handle the day-to-day running of the vineyard and home domestic duties, allowing Lettie to concentrate on her studies.
Laeticia "Lettie" Maugham (yes, her name has been changed as I don't think I can get away with calling her "Titty" in a more serious context).
Born a witch, Lettie inherited her mother's magical genes. Unfortunately for her, in the absence of anyone to teach her, she is having to learn to deal with that on her own as, while supportive, in the realm of magic her father is about as useful as tits on a bull. Perhaps as a result somewhat of that she is a quiet, intelligent, somewhat bookish girl, with a stubborn streak Henry insists comes from her mother. Otherwise though she's generally an agreeable sort of person who would prefer to avoid confrontation... at least until one hits upon a subject she either feels strongly about or which she feels she knows more than one about. On that note, she can be quite academic at times, with a tendency to perhaps rely a little to much on written texts, especially her mother's notebooks, rather than moving on to logical conclusions from those.
Despite that she is still basically a farm kid, so has some practical skills: she can change a spark plug, drive a tractor, etc... though those tend to be learned through experience rather than something which comes naturally. Unsurprisingly she's also not particularly athletic, and her dress sense tends toward conservative, though her winter/"adventuring" boots are hobnailed; her magic is less than reliable, and so it's always nice to have the option to be able to kick someone in the face if required.
Mathilde is one of the Maugham's new neighbours ("neighbours" being defined as still half a kilometre up the road), having moved into what was formerly the vineyard owner's villa. Her father is area manager for a luxury goods group, and has shifted the family from Paris to Bordeaux to oversee the company's operations there... something Mathilde is less than impressed with. She consequently does not get on so well with her own parents. Henry found her wandering down the road and brought her in, and she has since somewhat attached herself to him and Lettie as a surrogate family, spending most of her spare time hanging around the vineyard instead of at her own home.
As a personality she is energetic, flighty and slightly flirtatious, seeing herself as more cosmopolitan and worldly than the provincial types she now mixes with. She goes to the same school as Lettie, albeit a year below, that latter seeing her as a sort of annoying little sister.
Anyway, that's the basics.
Henry, Laeticia and Mathilde are (c) wraith11, obviously.