Clothing/Shoes/Weather Gear: Visiting Dublin in Winter should expect lots of rain and strong wind. A suitable wind breaker with water resistance features would be just perfect for the Irish merciless weather.
Luggage and bags:
Gortex Jacket is a must....
Clothing/Shoes/Weather Gear: a little bit of everything....make sure you have somethings that are water proof! lots of rain comes down in Ireland.
Clothing/Shoes/Weather Gear: Be sure you're prepared for rain. My raincoat was always with me and I used it a lot. The skies over Dublin can turn from calm and blue to gray and turbulent in a hurry.