The main man behind the Duke Of Burlington was Italian pianist/accordionist Mario Battaini (1931-2000), who also made jazz accordion records under the alias Batman.

I think the Duke of Burlington name was originally coined as a rip-off of 'The Marquis of Kensington' - the Marquis did the original version of 'Flash', which the Duke covered.

The Duke's recording of Flash also appeared on a German LP credited to one Early Freeman und sein Orchester