Florian von der Lüne was born to Audric and Freida von der Lüne. The von der Lüne family hailed from Lüneburg, Lower Saxony, and had historically been in command of the River Lüne, which is where they got their name. Audric and Freida were wealthy couple, but not quite as rich as their family history. You see, the von der Lünes (tr. 'of the Lune River) were a Noble family who had always been very well established for being stewards of Lünesburg and the river. From the early Medieval and Hanseatic periods, they looked after the town and the trade, that went to and from the river. Thus, they became known as the family of the River. As time went by, and the idea of nobility died in Germany, the von der Lünes became masters of commerce, merchants. They created a monopoly within Lünesburg, controlling what went in, and what came out. This way, they remained in control of the village.
All was well, until Audric became of a suitable age to marry. His parents wished for him to marry a girl from a rival business as his older brother, Elfric, had. However, Audric had other plans. His childhood sweetheart, Freida, and him were madly in love. When Freida told him that she was pregnant with his child, they decided that the best plan would be to elope, and leave the pressures of the family behind.
And so, Audric and Freida moved to the south of England, specifically Torquay, Devon. Florian was born, and he loved the little seaside town. Everything from the creaking floorboards of their detached manor house, to the cries of the gulls and the smell of the sea after a thunderstorm. Florian was a curious child, displaying his first sign of magic at six, when he dropped an icecream on the sand in the beach. Instead of crying, he just held his hand out, and the ice cream levitated back into his hand. At this point, his parents were aware of him being a wizard.
Therefore, it was no shock nor surprise when Florian received an acceptance letter to Hogwarts when he turned eleven. Florian was sorted into Ravenclaw house.