What does nelsom mean?

Nelson is a masculine given name and surname of Old Norse origin. It originates in the Old Norse words nels ('nourishing') and hólmr ('island'), meaning 'island promontory'. The name was popularised in England by the naval hero Admiral Horatio Nelson, 1st Viscount Nelson (1758–1805), who defeated the French and Spanish fleets at the Battle of Trafalgar. The name has since become common in many parts of the world.