Circa (c.)
A Latin word that literally means "about" or "around" as in c. 1500. The other forms ca or ca. are also used throughout the histories.
","Located in the Gulf of St. Lawrence, Quebec, Canada, Grosse Ile is one of 21 islands of the archipelago. This was one of the Canadian quarantine stations which was active from 1832 to 1937. Most Irish immigrants passed through this station in the 1840s. During its operation, almost 500,000 Irish immigrants passed through this station.","County Sligo, (Sligo, Contae Shligigh)