[This dataset is embargoed until January 4, 2027]. Multi-proxy data from a peat core extracted from Store Mosse National Park, south-central Sweden in September 2023. Measurements include carbon, nitrogen and phosphorus concentrations, organic compounds determined via FTIR and NIR spectroscopy, inorganic geochemistry - specifically elements that may denote dust or pollution deposition, and physical properties including bulk density and pH. The core reaches 280-cm depth, of which the uppermost 200-cm are the focus of our analysis. Radiocarbon dates, supplemented by pollution deposition markers, indicate this period captures continuous peat accumulation over the last 1800 years. Full details about this dataset can be found at https://doi.org/10.5285/9aedea56-7786-47f2-9007-7bf5bf63738a