The term duke of marlborough is identified in base64 scheme by the sequence ZHVrZSBvZiBtYXJsYm9yb3VnaA==, while the MD5 signature is equal to 80a1c65d06d62099ef21b46a0f7b6867. The ASCII encoding of duke of marlborough in hexadecimal notation is 64756b65206f66206d61726c626f726f756768.