John Venn.
Venn diagrams are named after their inventor, John Venn.
venn diagram
john venn lived in the middle of nowhere near doncaster!!!!!!!!!
He used them in his studies of logic.
John Venn
Susanna Carnegie Edmonstone
John Venn was born on August 4, 1834.
Henry Venn
John Venn
John Venn
John Venn!
John Venn.
John Venn was born on August 4, 1834.
John Venn was born on August 4, 1834.
John Venn - academic - died in 1687.
John Archibald Venn died in 1958.