H. Percy Blanchard was a Canadian lawyer and science fiction author. Blanchard was born in Windsor, Nova Scotia in 1862.^[1] He later resided in Baddeck, Nova Scotia. He died in 1939. He is known for his novel After the Cataclysm: A Romance of the Age to Come.^[2] He also authored Draft of an Imperial Constitution, With Comments, a legal document proposing a constitution for the British Empire.^[3]