Excerpt from NEWLYN - A VIEW FROM STREET-AN-NOWAN by John Cecil Jenkin
Just read this piece this morning...
"...and around 1829, Charles KELYNACK, grandson of Old Bunger who rescued Wesley from a hostile crowd, persuaded Newlyn fishermen to fish for herrings in Irish waters, beginning in July after the mackerel season. By 1838 some 100 boats took part regularly."
There's also a famous painting by Stanhope Forbes called Off To Skibbereen which shows a boat setting sail from Newlyn. Skibbereen is on the coast of County Cork, if I remember correctly.
I just noticed that this doesn't really tie in with your dates, but I'll leave the info on here anyhow.