Bayan haka, a cikin shekara ta 1415 Sir Peers Legh ya ji rauni a yakin Agincourt, Mastiff dinsa ya tsaya ya kare shi tsawon awanni a cikin yakin. Daga baya aka mayar da Mastiff zuwa gidan Legh kuma ya zama tushen Lyme Hall Mastiffs. Karni biyar bayan haka wannan asalin ya kasance a cikin kafa asalin zamani. Sauran wuraren da aka san cewa Mastiffs sun kasance sune Elvaston Castle (Charles Stanhope, 4th Earl of Harrington da kakanninsa) da Chatsworth House.
Mastiff