Question: For which incident are people for whom the governing body of 72 councillors erected plaques known for ?

text: List of blue plaques
Other similar plaques -- People

This list of blue plaques is an annotated list of people or events in the United Kingdom that have been commemorated by blue plaques. The plaques themselves are permanent signs installed in publicly visible locations on buildings to commemorate either a famous person who lived or worked in the building (or site) or an event that occurred within the building.
Person Notability Address Erected by
Jessie Ace and Margaret Wright Heroines of Mumbles Lifeboat disaster Mumbles Pier , Swansea , Wales City and County of Swansea
Richard Arkwright junior ( 1755-1843 ) Inventor of machinery for large scale cotton spinning Lumford House Bakewell , Derbyshire Derbyshire County Council
Francis William Aston ( 1877-1945 ) Scientist , Nobel Prize winner in Chemistry 1922 Tennal House Tennal Road , Birmingham
Charles Babbage ( 1791-1871 ) Mathematician , astronomer and computer pioneer 1a Dorset Street , W1 Westminster City Council
Charles Babbage ( 1791-1871 ) Mathematician , astronomer and computer pioneer Corner of Larcom Street and Walworth Road , SE17 Southwark Council
Olave Baden-Powell ( 1889-1977 ) Chief Guide of the Girl Guides Shentall Memorial Gardens Chesterfield , Derbyshire Derbyshire County Council
Henry Baines ( 1793-1878 ) Botanist and Curator of York Museum Gardens Manor Cottage , York Museum Gardens , York Yorkshire Philosophical Society York Civic Trust York Museums Trust
William Barron ( 1805-1891 ) Designer of Elvaston Castle Gardens  Derbyshire County Council
John Logie Baird ( 1888-1946 )  132-5 Long Acre , WC2 The Royal Television Society
Mary Barbour ( 1875-1953 ) Scottish social reformer , Rent Strike Leader , Women 's Peace Crusader and pioneering woman councillor in Glasgow 10 Hutton Drive , Linthouse , Glasgow Linthouse Housing Association
Harry Beck ( 1903-1974 ) Creator of the schematic Tube map Finchley Central tube station , N3 London Regional Transport ( grey )
Elizabeth Bell ( 1862-1934 ) Physician , Suffragist Daisy Hill Hospital , Newry , Northern Ireland Ulster Historical Society ( blue )
A. C. Benson ( 1862-1925 ) Author of Land of Hope & Glory Godolphin House , Common Lane , Eton College Royal Borough of Windsor and Maidenhead
Jack Kid Berg ( 1909-1991 ) Boxer Noble Court , Cable Street , E1 Stepney Historical Society ( blue )
Hannah Billig ( 1901-1987 ) Physician 198 Cable Street , E1 London Borough of Tower Hamlets
Sir William Bragg ( 1862-1942 ) Scientist , Joint Nobel Prize Winner , 1915 , with his son , Sir Lawrence , for Physics Parkinson Building , University of Leeds
Sir William Lawrence Bragg ( 1890-1971 ) Scientist , Joint Nobel Prize Winner , 1915 , with his father , Sir William ( q.v . ) , for Physics ; the only current instance of both father and son Nobel Prize winners Parkinson Building , University of Leeds
Enid Blyton ( 1897-1968 ) Writer 83 Shortlands Road , Shortlands , BR2 London Borough of Bromley ( blue )
Robert Boothby , Baron Boothby Private secretary to Winston Churchill 1 Eaton Square , SW1 Private
Harold Bride Wireless operator aboard the RMS Titanic 58 Ravensbourne Avenue , Shortlands , Bromley London Borough of Bromley ( blue )