Horčický's books

[ReneZ]

René, I have the vague recollection of you and Gabriel "discovering" the name on f1r, back when you were transcribing the VMS from some earlier set of images, and being puzzled abut it. 

Is that recollection correct?

Had others noticed that name before?  How did you find out that it was Jacobus's?

Did Wilfrid himself ever mention that name in public? Did his widow?

I'm a bit confused by your question. This has been discussed at length in 'the other thread'.
Short summary: first described by Voynich in his 1921 paper, which is available online (see the References page at my web site). Also described in D'Imperio (same two comments).