They appear to be some of the children of Patrick Kneale and Ann Cannell

In 1851 they were living at Clennaugh ( various spellings) in Lezayre Parish. Ann had died in 1848.

By 1867 the land holding , according to Wood's Atlas, amounted to just over 2 acres and was still in Patrick's name although he had died the year before.

There is a 21 year rule that allows a user of land for that period to claim it, probably with a simple affidavit from a neighbour - others will tell you in more detail.

You may need to search Land Registry to see who owns it now.

Len Faragher