Is Lud the origin of name London?

No, the name London does not originate from the legendary British King Lud. The name "London" is believed to have derived from the Brittonic word "Londinium," which was the name of a settlement located on the site of present-day London during the Roman era. The name "Londinium" itself is thought to have been derived from the Celtic word "Londinos," which may have referred to a pre-Roman settlement at the location or may have had other connotations.