I've just noticed the last four messages. I was not notified about them. I've just fixed that and will now answer them.
I've been in touch with my second cousin, Evelynne, by phone.
Thanks to Seanmac for the info about the graves & the tithe defaulter.
Tithes were an annual sum paid to the established church (C. of Ireland) by all landholders, regardless of religion. Naturally there was great resentment among Catholics, especially when times were bad. (Correct me if I'm wrong about this)
Kyren Trait, tithe defaulter in 1841 (5 years before the famine started) was the father of Kyren, b. 1835, who came to Australia in 1853. He made his way to Geelong, Victoria, where his uncle Michael (my ancestor) then lived.
Kyren snr, I believe died before 1849, as his wife Mary was then listed as the tenant.
Re the headstones of Butlers & Byrnes. So far I have not sorted out the Butlers
or Byrnes. As for Lyons of Knockshanbally, that is where our Lyons ancestor, Daniel c. 1830-1893, came from. (He came to Australia and his daughter Anne married Michael, grandson of 'old' Michael Trait.)
So, the other Daniel Lyons 1828-1902, of the same place was probably our Daniel's cousin.
Ken