Help with pronouncing a place name

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The Irish form of the name is Áth an Chaisle.  There are actually two townlands of that name, Áth an Chaisle Thuaidh (Aughacasla North) and Áth an Chaisle Theas (Aughacasla South), which adjoin one another.  You can see more info about Aughacasla North at this link:

https://www.townlands.ie/kerry/corkaguiny/killiney/deelis/aughacasla-no…

and there's a link at that page to get to the page about Aughacasla South.  At each page, there's a link to the logainm.ie page for the townland, which explains more about the name and location.  For Aughacasla North, this is the link:  https://www.logainm.ie/en/22535

In the local dialect of Irish, the name would be pronounced roughly as follows:  "AW uhn KHESH-luh"  with what I've written as "kh" being like the guttural "ch" in the word loch (but a bit less guttural in this case).  That sound has been reduced to just a "c" in the anglicized spelling Aughacasla, and the later "sh" sound has been reduced to just an "s", which is not uncommon in place names, since they were often anglicized by someone who could not speak Irish (or pronounce it very well).  The "uh" sounds which I've indicated are indistinct, schwa-like sounds, as in the English expresssin "Huh".

In case you're interested in how to pronounce the two different townland names, they would be approximately as follows:

Áth an Chaisle Thuaidh:  "AW uhn KHESH-luh HOO-ee"

Áth an Chaisle Theas:  "AW uhn KHESH-luh HYASS"

Try 
Orgcasla

Ow-ah-casla also works for the anglicised version