In researching my Kenmare ancestors over the past 20 years I hadn’t come across Margaret Donoghue and John Harrington. My Harrington ancestors were born some years before Margaret, and lived a little out of Kenmare in a section of the town called Lisseyclearig, which is up the Hospital Road and through Dromneavane.
From the Irish Newspaper Archive website I’ve learned that archives for the Kerryman newspaper will soon be available to research online. Once the archive does come online, you can look for Margaret Donoghue Harrington’s obit for the 1922 time period. Please see http://www.irishnewsarchive.com/
More information can also be found at: http://www.irishnewsarchive.com/the-kerryman.php
Best of Luck Margaret.