What is keris Brojoguno?

[Newsteel]

I know Brojoguno is a name of an Empu. But what exactly does it mean when it is said keris brojoguno? Keris made by Empu Brojoguno? Or the dapur made according to his signature or simply means that the metalwork quality is superior, some known to be the strongest steel?

[A. G. Maisey]

I rather suspect that "keris brojoguno" could pretty much mean whatever the user of the term wanted it to mean, within the context of his usage.