Sir Ernest Marsden....
In his honours year at Manchester University Rutherford suggested a project to investigate the backwards scattering of alpha particles from a metal foil. He did this in conjunction with Hans Geiger, of Geiger counter fame, and it proved to be the key experiment in the demise of the plum pudding model of the atom leading directly to Rutherford's nuclear atom. Rutherford also recommended Marsden for the position of physics professor at what is now Victoria University in Wellington.
There is an nice simple powerpoint presentation and picture of him here
http://shelleyhs.digitalbrain.com/sh...%20Marsden.ppt
Here is another link in case the one above disappears :-
http://www.sciencemuseum.org.uk/on-l...ion3/1911a.asp
This was a significant piece of work into the composition of the atom as most schoolchildren should know.
Nice one Atarah