After founding thirty-seven monasteries in Ireland, from Derry on the northern coast to Durrow near the Munster border, he crossed the sea in 563 to set up on the bare island of HII or Iona a group of reed-thatched huts peopled with Irish monks.
"Irish Nationality"
Alice Stopford Green
HII probra et uerba turpia in Offam irreuerenter ingesserunt, et iuueni pudorato in conspectu excercituum, non minus sermonibus quam armis, molesti extiterunt.
"Beowulf An Introduction to the Study of the Poem with a Discussion of the Stories of Offa and Finn"
R. W. Chambers
411. HII, or Columbkill, brief account of it, vii.
"The Works of the Right Honourable Edmund Burke, Vol. XII. (of XII.)"
Edmund Burke