Pat,
Based on the photos in O’Neill and his descriptions, I’d be inclined to think the differences are regional, and not chronological.
A couple of John Wayland’s students (Denis O’Leary, May McCarthy) in the Cork Pipers club use the finger ends. So does John (Shane) O’Neill, described as the “foundation” of the Cork club.
RL O’Mealy of Westmeath, uses the finger ends also. His father and grandfather, both pipers, came from Mayo.
Turlogh McSweeney from Donegal appears to use the finger ends.
But all the Rowsome boys and the Dubliners under Nicholas Markey (who was a student of Billie Taylor before he emigrated) use the “modern” style.
There is a 20 year (or so) gap between O’Farrell (who may have been from Limerick?) and the Taylors (or at least Billy and Charley’s dad) and also Jem Byrne (Senior or Junior can’t tell which) who taught the elder Samuel Rowsome, who seems to have been born around 1830s (same as Billie Taylor). The Byrnes are from Wicklow, the Rowsome crew from Wexford. The Taylors made “Highland” pipes while in Drogheda, but there is no mention of war piping in the background of the southeast coast pipers.
Many of the other photos, particularly emigrants to America, don’t match this regional scheme, but on closer look, these guys learned mostly after leaving Ireland (as far as I can tell).
It’s a thought anyway.
Eric
ps. Not that it adds anything to my hypothesis, but O’Neill mentions Grogan of Wexford as first performer of record on the “improved” pipes, and drawing of pipes in a collection in Carlow, dated about 1760ish. Perhaps the modern method IS the old style, and the finger-tip approach of O’Farrell, Wayland, McPeake, McSweeney, et al a more recent development. Heck, maybe O’Farrell got it “wrong” and his tutor spread the mistake.