<P> Robert Walpole is the only person to have served as Prime Minister for more than two decades . George Canning served for less than four months before his death . </P>
<P> Robert Walpole is the only person to have served as Prime Minister for more than two decades . George Canning served for less than four months before his death . </P>
who was the longest serving prime minister of britain
who was the longest serving prime minister of britain
Robert Walpole
Robert Walpole