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
King's Carriage : Set 6044-1 | BrickLink
LEGO 6044 King's Carriage Set Parts Inventory and Instructions - LEGO Reference Guide
LEGO 6044 King's Carriage Set Parts Inventory and Instructions - LEGO Reference Guide
Milanuncios - LEGO 6044 MEDIEVAL CARRO REAL AÑO 1995
LEGO 6044 King's Carriage 100% Complete w/Manual & Extra Items, no box, VTG 1995 | eBay