Clare

It's likely that the county of Clare's name derived from Irish (clár), which means "plank, board" and references a bridge crossing the River Fergus. [noted -ed] This can also be a unisex name.

There is also an island off the coast of County Mayo in Ireland called Clare Island. I belive this island was also named after Strongbow, as noted before, and Grainne Ni Mhaille (Grace O'Malley, she-king and pirate, contemporary of English Queen Elizabeth I) married him and upon his death ruled the seas and much of the western coast of Ireland from this her beloved post on Clare Island.

Clare means bright or clear. Clare is a form of Clara, and its origin is Latin.

Actually, the above commenter is incorrect. Clara is a form of Clare. Clara is my name.

No, Clare is a form of Clara. Clara was Latin and the original form, from which Clare is derived.