The word means 'little fire'... It's a very polpular name in Ireland, Scotland, England, US and so on (Wikipedia tells me), although we know no one bearing the name in Kerala, India, where we live.
Going through the list, I find fine footballers, cricketers, rugby players, journalists, comedians, musicians, writers, artists, politicians, businessmen, dancers, television presenters, pilots, preachers, bishops, cardinals and anti-war activists sharing the name Aiden.
Looking at his face, one gets closer to the meaning of a quote one had given in a recent post in this blog:
She follows to the goal of those that are passing on beyond, she is the first in the eternal succession of the dawns that are coming, - Usha widens bringing out that which lives, awakening someone who was dead.... What is her scope when she harmonises with the dawns that shone out before and those that now must shine? She desires the ancient mornings and fulfils their light; projecting forwards her illumination she enters into communion with the rest that are to come.
Kutsa Angirasa - Rig Veda, I. 113. 8, 10.