April 10

Sandy Lyle becomes the first Scottish (and British) golfer to win the US Masters tournament.

British Parliament proposes conscription in Ireland

Yann Ber Kalloch, a great Breton poet dies in the First World War

George William Russell (pseudonym A. E. Russell); poet, painter, writer, economist and mystic, is born in Lurgan, Co. Armagh

Campobello New Brunswick Irish-American Fenians attack Campobello Island from Eastport, Maine

Irish-American Fenians launch a brief and unauthorized raid on Campobello Island, New Brunswick, from Eastport, Maine, on April 15, 1866. Part of a broader campaign by the Fenian Brotherhood to pressure Britain into granting Ireland independence, the action is intended to provoke conflict between the United States and Britain.

Oliver Sheppard, sculptor, is born in Cookstown, Co. Tyrone

Fr. Theobald Mathew, with the support of William Martin, a quaker, founds the total abstinence movement in Cork

Birth of Sir Charles Gavan Duffy, nationalist, in Monaghan

Birth of William Brownlow, parliamentarian and Volunteer

A charter of Charles II replaces Cromwells charter of Londonderry