I located a barony map online. It looks like Edgeworthstown is in Ardagh Barony and Ringowny probably was too. I have now discovered the spelling of Ringowny on Google maps is indicated without an "e" before the "y". I am not sure where I found the spelling but I do have some corrections to make in my information.
Back to the census information. Below I've placed the chart that I found online of the 1659 Census of Ireland. In Ardagh, I see M'Gloughlin's. This is an English/British spelling of the name. I see a Murtagh indicated. Patrick McLaughlin was married to Bridget Murtagh.
At this point, I have probably hit my wall. I hope to find more information. As I go, I'm placing my research notes here for all to see. I welcome any McLaughlin's to participate in the search for our ancestors!
I found the following barony information on Wikipedia:
County Name Irish Name Acres Notes
|Longford||Ardagh||Ardach[i 19]||&0000000000001672000000By 1672||40223||Named after Ardagh village|
|Longford||Granard||Gránard[i 19]||&0000000000001672000000 By 1672||63857||Named after Granard village|
|Longford||Longford||An Longfort[i 19]||&0000000000001672000000 By 1672||57243||Named after Longford town|
|Longford||Moydow||Maigh Dumha[i 19]||&0000000000001672000000 By 1672||34470||Named after Moydow village|
|Longford||Rathcline||Ráth Claon[i 19]||&0000000000001672000000 By 1672||40421|
|Longford||Shrule or Abbeyshrule||Sruthail[i 19]||&0000000000001672000000 By 1672||21006||Named after Abbeyshrule|