In its early years , the Kingdom of Ireland had limited recognition .
The act also had the effect of establishing the United Kingdom of Great Britain and Ireland on the first day of 1801 by uniting the Crowns of Ireland and of Great Britain .
In Ireland 's early years , the Ireland     had limited recognition .
The act also had the effect of establishing the United Kingdom of Great Britain and Ireland on the first day of 1801 by uniting the Crowns of Ireland and of Great Britain .