Sure thing.

So, as you mentioned, Ireland's flag history isn't very extensive when you look into it, which made it very hard to do research into the history of Ireland's flag. A lot of the older flags don't really have explanations for their symbolism, other than the current flag that they use.

The first flag that that was used (1542 - 1801) was the royal standard from when Ireland was known as the Kingdom of Ireland.

The second flag that was used (1801 - 1919) is the Union Jack from when Ireland was incorporated into Great Britain.

The third flag that was used (1919 - 1922) almost has no explanation for it, as it had a very short use in Ireland's history.

The fourth and current flag (1922 - present) has a better explanation on its symbolism. The green represents the Irish Catholics and Irish republicanism, the orange represents the Irish protestants, and the white represents the hope and peace that can be achieved between the two religious communities.

There is also an unofficial Irish flag that has been is use since 1642.