I'm not a drop Irish (despite the red hair), but hey, aren't we all today? Certainly Kent thinks so...a warning, don't go to Kent, Ohio, on St. Patrick's Day....my opinion, anyway.
On my "real" topic, I found this other blog post that talked about Kennedy's first St. Patrick's Day in the White House:
The archives reveal that at 10 a.m. on Friday, March 17, 1961, the president's first in the White House, Ireland's ambassador, Thomas J. Kiernan, made his nation's annual pilgrimage to the Oval Office to present the ceremonial bowl of shamrock to the President. That tradition had started a few years earlier in 1958 when the inauguration of Aer Lingus transatlantic jet flights guaranteed fresh shamrock sprigs from Ireland on the big day....
The president greeted Ambassador Kiernan and, grinning, accepted the bowl of shamrock presented to him. Kiernan was not finished however. He then produced a beautiful hand-printed scroll displaying the Kennedy coat of arms, signed by the chief herald of Ireland, Gerard Slevin.