The Belfrey family has had their fortune for a long time now, for as long as the records have kept track of them. The Belfreys are known for birthing children who grow and branch out to become some of the most productive members of society, as entrepreneurs, lawyers, healers, government officials, etc. Over time, they've come together and amassed an unimaginable wealth, to which every Belfrey now has access to, contrary to the times where only the men in the family had access. Though they've always been centered in France & the United Kingdom, you're likely to find a descendant of the original Belfreys wherever you go - granted you know where to look. Lord knows the Belfreys breed fast, and at great quantities.
A key component of their family is the way they've come across throughout time. They're one of the original families in the world of magic - they've been in this Earth for centuries now, and thus feel a sense of superiority. It's not so much because they're of pure status - that's far from it. They've seen the rise and fall of many legendary families, great wizards and witches coming and going simply because they saw themselves as the best of the best, just because of the purity of their blood. That doesn't take away from the fact, though, that not all of them share the same mindset. Now think about how difficult it must be, living with a family that's ethically & morally diverse. The current Belfrey patriarch is a blood supremacist, despite his inclusive upbringing. He lived around the era of the Great Wizarding Wars, and has clung onto old ideals as an (undiscovered) former Death Eater. That, in itself, is bad enough.
His eldest daughter, Victoire Belfrey, is a prideful, arrogant woman. She strives to be one of the most powerful, one of the richest and most beautiful women to grace the British wizarding society. She's an over-accomplisher who married into the Yaxley family - a family known for their purity, their stance on muggle-borns and creatures, and the sheer amount of influence they have, what with all the political figures and lawyers they've spawned. Victoire is easily one of Bartholomew's favorite offspring; she understands what power is and strives to have it all. For that reason, her children's upbringing involved awareness of their status, and subsequently loads of tutoring on proper etiquette. They are, suffice to say, modern nobility - they have been ever since the rise into power of the Magical Monarchy. They need to look and act the part.
Laurence was one of Victoire's many children. A middle child. Similar to a few of his siblings, his beliefs were very different from the ones he was grown up with. His thoughts on politics and wizard "status" were quite contrast to his mother and father. He was always just more open-minded about life and thought about things a lot. Why does this make sense? What's the reasoning behind why this person believes this? Why does this person believe something different? He was always thinking and... blood supremacy didn't make a lot of sense when he thought a lot about it. When news had been revealed that Colette was actually a half-nymph, Laurence was a lot more welcoming about it than most of his family. He thought being a half-nymph was honestly really cool. So, was he ever a picture-perfect Belfrey? No, but that's never what he wanted to be.
Laurence was accepted into Hogwarts, sorted into Gryffindor. It was clear to him that he was a wizard at the age of seven, his first sign of magic being shown when having to clean the house when Victoire was gone. He had forgotten to do so and she could be home any minute, but he managed well enough and the house was clean perfectly once she walked through the door. He was excited to be sorted into the house of Gryffindor, hearing some about it from a few of his older siblings that had been sorted into the lion house. He did well in his house, did well in school in general. Though, what he wanted to do in life had to do more with Care of Magical Creatures than anything else. And, funnily enough, that was the class he excelled in most. His ideas occupation-wise varied throughout the years - all having to do with creatures, magical and muggle ones alike - but his decision was set in stone when graduating and pursuing the job. It had to do with one of the most interesting and dangerous magical creatures. So, now at eighteen, Laurence started working as a dragonologist.
Similar to a few of Laurence's siblings, the Belfrey traveled some right after graduating, studying dragons of all types around the world. But also similar to a few of his siblings, he ultimately decided to come back to be with his family when the new policies started to be made. His first thoughts went to his half-nymph sister, Colette. When he found out she was going back to England herself, Laurence was back soon after. It wasn't even him being much of a protective sibling. She was the older one. He just wanted to be with the family - the ones worth his time - while policies and such like these were surfacing and a whole new trash minister had taken power.