Have found Margaret's first husband was Patrick HICKEY. He died at Rathernan in 1861. They were married in Allen parish in 1856 and had two children, Andrew in 1857 and Joseph in 1860.
Patrick NOLAN and Margaret had six children that I could find.
Elizabeth 1864-??
Peter Thomas 1865-1870
Mary Theresa 1867-1954
Jane 1870-1870
Richard 1871-??
Aloysius/Louis 1873-1946.
Some of these names looked familiar. A Nolan relly had recently sent me info about gravestones they had seen and photographed some years ago. It turns out that Margaret, her son Andrew HICKEY, and NOLANs Mary Theresa and Louis are all buried in this cemetery. Not sure what it is called but it is a couple of kilometres south east of Kilmeague.
https://www.rootschat.com/links/01qdj/According to an old map there used to be a church there as well.
Ian C