[3] Efforts were made to establish a bilateral trade agreement between Poland and Sweden, which Düben worked to finalize.

[4] In 1768, he also sought to persuade Swedish citizens in Poland, including the portraitist Per Krafft the Elder, to return to Sweden.

[5] In the 1750s, Düben arrived at the court of Adolf Frederick and Lovisa Ulrika, initially serving as the Master of Ceremonies.

[6] Düben was elected as an auditor by the Riksdag of the Estates in the Swedish National Debt Office, including war financing.

[10] Düben maintained a close connection with Élisabeth Soligny,[11] a French ballet dancer, leading to an extramarital affair and the birth of an illegitimate child.