Tree-ring cellulose stable oxygen isotope series from 15th-century roof timbers of St. James' Church, Bruges, Belgium

Suppelementary data for: Haneca K., Debonne V., Davies D., McCarroll D. & Loader N.J. 2025: Oxygen isotope dendrochronology allows dating of historical timbers across a wide geographical region, Dendrochronologia 89, 126283. https://doi.org/10.1016/j.dendro.2024.126283 The file BRG.SJK-d18O_RW.xlsx contains tree-ring cellulose stable oxygen isotope (δ¹⁸O) series for four individual oak roof timbers, together with ring-width measurements for seven dated timbers from the 15th-century common rafter roof over the northern side aisle of St. James’ Church in Bruges, Belgium. The data support the dendrochronological and stable oxygen isotope analyses presented in Haneca et al. (2025). For details on sampling, measurement procedures, cross-dating, and interpretation, please refer to the associated publication.