Háirdín
HÁIRDÍN—VIII—Hardeyne, Hardyn, Harding, Hardinge; 'son of Heardwine' (an Anglo-Saxon name; not from 'Harding,' another Anglo-Saxon name, as the older forms show); an old surname in Ossory and Ormond.
Alphabetical Index to Irish Surnames
HÁIRDÍN—VIII—Hardeyne, Hardyn, Harding, Hardinge; 'son of Heardwine' (an Anglo-Saxon name; not from 'Harding,' another Anglo-Saxon name, as the older forms show); an old surname in Ossory and Ormond.
Alphabetical Index to Irish Surnames