What is the name of the column in Trafalgar Square?

Great question and fantastic summary!

Sailors were traditionally buried at sea, however an exception was made for Admiral Nelson as the nation wanted to honour him. So his body was put in a barrel filled with spirits ( most probably rum) to preserve him all the way home from Trafalgar. A huge impressive carriage was made to carry his body through the streets of London to St Pauls, where he was buried.

little b, I have. It's a beautiful place.