Queen Victoria's fourth daughter died owing 15 shillings to a London tobacconist, documents have revealed, BBC reported.

Princess Louise died in 1939, aged 91, with an unpaid cigarettes bill at R Lewis Limited, located near Buckingham Palace and St James's Palace.

The National Archives in Kew released details of Princess Louise's estate earlier this year.

Historians say it's "very unusual" for such personal documents to be released, as they are usually sealed.

The princess, a renowned artist, was the sixth child and fourth daughter of Queen Victoria and Prince Albert. She was known for her unconventional lifestyle.

According to the death duties file, Princess Louise left £239,260, 18 shillings and sixpence, worth more than £70m today.

However, the 15 shilling cigarette bill remained unpaid.

The debt would have bought 300 Players or Woodbines, the popular cigarette brands of the time - however, the documents don't say which one the princess smoked.