Suffolk Wildlife Trust are to create a 76 acre grassland reserve at Fords Heath near Leavenheath, Suffolk, after successfully raising £110,000 reports the BBC.
Fords Heath lies just next to two existing Suffolk Wildlife Trust Reserves - Arger Fen and Spouse's Vale. The trust says the aim of this scheme is to link up the patches of habitats and manage them so that wildlife can move between them.
Julian Roughton, chief executive of the trust, said: "Buying and enlarging nature reserves is one of the most powerful ways in which we secure a better future for wildlife.
"As the habitats mature it will become a haven for wildlife and a place for people to cherish."
The total cost of the buying Fords Heath was undisclosed, but the legacy came from Gerald Ford, a trust member from Essex.
His brother, Geoff Ford, said: "Gerald loved Suffolk - the county of his parents - and always wished to leave some permanent presence here.
"He was a life-long naturalist and would have been delighted to see his legacy being used to create a space for wildlife."