What is the fine-grained topic of the following text: Research into the origins of individual families in North America revealed records of the immigration of a number of people bearing the name Longmith or a variant listed above: Abraham Langford, who settled in Barbados with his servants in 1680; Harry Langford settled in New York in 1679; John Langford settled in Virginia in 1651. Only return the topic.
Immigration history of the Langford family in North America