The 75958 HP Beauxbaton's carriage reminded me of a Castle set I got as a kid, like an updated 6044 King's carriage. I did some slight modifications (Pegasus wings...) and exchanged the
LEGO 6044: King's Carriage | Brickset: LEGO set guide and database
LEGO 6044 King's Carriage Instructions, Castle
LEGO 6044 King's Carriage 100% Complete w/Manual & Extra Items, no box, VTG 1995 | eBay
LEGO PART 6044 Slope 53° 3 x 1 x 3 1/3 with Studs on Slope | Rebrickable - Build with LEGO