This paper will detail the development of an ontology that reflects the complex relationship between concepts of labor and office in the 18th century Moravian ego-documents of Fulneck, Yorkshire. Undertaking this type of rich and subject-driven data mining permits the exploration of the relationship between forms of labor in Moravian congregations and their relationship to a broader understanding of work in the 18th century. It also provides a platform for further investigation of contemporary religious societies.