The source is given as The Complete Works of Turlough O'Carolan but the tunes and numbering seem to be identical with those given in Donal O'Sullivan's Carolan The Life Times and Music of an Irish Harper (though on 006 Planxty George Brabazon the indication Joviale in O'Sullivan is replaced by CHEERFULLY in the gif on the site; I looked only at a couple of the pieces, and in Lady Blaney referred to above the indication Allegro is left as is).

Regarding GUEST(05:16AM)'s post above on Lady Blaney it must be said that the midi is an accurate rendering of the melody line as given. You may not like the harp effect, it may not be embellished as a harper would play it, but it is the melody.

Mick