“Geran may also have been a form used by the
Normans in Ireland for we find in the ‘Chartularies of St. Mary’s
Abbey, Dublin’, public records Office Vol I pages 462-463, 465
& 469, circa 1225 to 1250 the names of Baldwyn Geran appended to
records.
Also Registers of St. Thomas’ Abbey, Dublin, Public Records Office,
pages 80, 169–124, 209, 285 and 375, in the year 1225, the name
of Garin (spelled also Garinus for the entries are all in Latin) Archdeacon
of Glendoloch.
Geran, Abbot of Saghair died in 868.
It is also found in the grants of Elizabeth.
No. 5808 - April 1593.
Pardon of Taige Mac M. O’Gerane of Balimolchai, relating to persons
in Roscommon, Clare & Galway
No. 6495 - April 1601 .
Pardon of Morish Mac Canagher O’Gyeran in list of Kerry pardons
No. 6529 – 25 May 1601
Pardon of Morish O’Geran, Kerry
No. 6511- May 1601
Pardon to Donnell O’Sullivan Bere and following, the name of Diermond
Oge Ny Geirine of Glenhanaries (?), near Bantry appears
On the other hand the name Guerin does not appear in Ireland before
the Huguenot migration and the first heard of it is in the will of Jasper
Guerin proved in Charleville, Co. Cork in 1670. ”