Please.some Help With Ireland Cancel Fragments

My copy of "A Listing of Irish Postmarks in Gaelic From 1922" (ed. 1988) is worn and precious to me, but it hasn't helped me to figure out where in Ireland the partial strikes on these 3 stamps were postmarked. Can anyone help?
On the left stamp I think I make out "???E IARAINN"
On the center stamp I think I make out the word "LOBHAR"
On the right I think is "???? NA SEAN"
Of course, both Gaelic and English names would be appreciated.

The second one may be Ower = An tObhar, Co Galway.

Interesting...my "Listing..." lists Ower as Odhar in Gaelic. Well, spellings do sometimes change.
Thank you for the suggestion!

Another hint that I've run across is that "iarainn" is a Gaelic word for "iron."
But I haven't found anyplace in Ireland with "iron in its name.

There are plenty places, mostly townlands, with iarainn but none I can find match the word preceding it.

Tulach an Iarainn = Tallow

Townlands, etc,:
Poll an Iarainn = Ironpool (this even has 'Iron' in its English name)
Coill an Iarainn = Killinierin
Tom an Iarainn = Tomanierin
Tobar an Iarainn = Toberanierin
Sceich an Iarainn = Skehanierin
Ros Iarainn = Mountross
Ráth an Iarainn = Raheenering

Unless you decipher the preceding word, it may be problematic to find the placename.

As for ???? NA SEAN: this, likely, is ???NA SEAN (no space before 'NA'). Sean means 'old.' It is used in some street names like Frankfort (Sean) = Old Frankfort in Dublin. It, mostly, appears before the street name.

Thanks for all your work on this, NSK!
I think there's an M in the word preceding IARAINN and I',m tempted to speculate that the word is some version of MONTE. Maybe there is a tourist facility at or near Sliabh an Iarainn, the mountain in Leitrim, where one can drop mail.
BTW, a point on which I'm ignorant, can some/many/none townlands have post offices where mail can be canceled?

Yes, but in the past. Now. it is done in mail centres.

The first one may be Gráig na Muilte Iarainn = Woodford (Loughrea) in Galway.
The last one may be Teampall na Sean-bhoithe = Templeshambo in Wexford.

Oddly, I was looking at that word Muilte, but was thinking about Moilie. So, I searched for the Gaeilge for 'Mill.' Naturally, 'Muilte' did not come up. The Irish name means 'hamlet of the iron mill'

Edit: added edited quote and explained why it may no longer be the case.

Thank you...may your stamp hinges never curl! (That is, if you are among the diminishing number of collectors who use hinges nowadays. I do use them, and the curling irritates me. But my "Gazetteer Collection" is so huge now that I cannot afford the other methods of mounting.)

MNH collector, or as we call it here: unmounted-mint collector.