Onme (i.e. simul) or Omne son of the king of Leinster. And he was given as a hostage to the king of Leth Cuind, and he gave him into Brigit's hand that she might on his account obtain submission a patre suo, et aliquo die dixerunt discipulae Brigitae ei: ' 'tis lovely the little hostage (giallán) is to-day,' said they. 'Giallán will be his name for ever,' said Brigit. And that is the one who is in Cell Giallain in Ui Muiridaig.It seems that the little hostage made quite an impression on Saint Brigid and her household! Professor Pádraig Ó Riain, in his 2011 Dictionary of Irish Saints reveals that the saint is associated with the County Kildare locality of Killelan, probably originally Ceall Ghialláin. October 2 is the second of two feast days recorded for him, the first is at September 6. There is a post on Saint Giallán at my other site here.