Aer Lingus lists the carry on limits as:

Max weight 10kg (22lb)
Max size 55cm H (21.5") x 40cm W (15.5") x 24cm D (9.5")
Plus one small personal item: Small handbag, laptop, duty free or baby changing bag.
Max size 25cm H (10”) x 33cm W (13”) x20cm D(8”)

My roll about fits the size limit, but it is usually about 30 pounds and not 22 pounds.

My personal item is a back pack about 19 - 20 inches tall. I don't care if they gate check the backpack as long as they don't charge for it. The roll about cannot be checked as it contains items that may be stolen.

Will my carryons get by or is Aer Lingus pretty strict? I'm flying out of Boston to Dublin.

Thanks