Ulster

There's more than one place called Ulster:

Britain and Ireland
The ancient province of Ulster was split by the partition of Ireland:
 * Northern Ireland — six counties of Ulster form one of the constituent countries of the United Kingdom
 * Northwest Ireland and Lakelands — includes the remaining three Ulster counties in the Republic of Ireland

New Zealand

 * New Ulster — see North Island (New Zealand)

United States of America

 * Ulster (Pennsylvania)
 * Ulster County — a county in New York
 * Ulster — a town in Ulster County