Breary Marsh is a Local Nature Reserve and Site of Special Scientific Interest situated adjacent to Golden Acre Park in Leeds, West Yorkshire, England, grid reference SE264416.
[1][2][3][4] As the name suggests, it includes an area of marshland, but also a wet alder valley wood and former birch coppice.
[4][5] It is said to be "a representative example of a wet valley alderwood and associated flood plain fen communities and is the most diverse example known in the county".
However, later forms, including the modern name, show replacement of the second element with a related word of similar meaning: Old English hæg ('fence, enclosure').
For a time the western part of the settlement so named was called West Breary, first attested in 1549 as 'West Brerry'.