[4] The coincidence of the decline of the mining industry in Cornwall in the 19th century and the discovery of large amounts of mineral deposits abroad meant that Cornish families headed overseas for work.
Each decade between 1861 and 1901, a fifth of the entire Cornish male population migrated abroad – three times the average for England and Wales.
[5] Large numbers of Cornish people moved to the United States, and while some stayed in New York City and other East Coast ports after arriving, many moved inland to mining areas in California, Wisconsin, Pennsylvania and Michigan.
In California, statues and monuments in many towns pay tribute to the influence of the Cornish on their development.
[9] In the city of Grass Valley, the tradition of singing Cornish carols lives on and one local historian of the area says the songs have become "the identity of the town".