While they walked across Brougham Bridge ( now Broom Bridge ) , a solution suddenly occurred to him .
On October 16 , 1843 , Hamilton and his wife took a walk along the Royal Canal in Dublin .
While they walked across Brougham Bridge ( now Broom Bridge ) , a solution suddenly occurred to Hamilton .
On October 16 , 1843 , Hamilton and his wife took a walk along the Royal Canal in Dublin .