In June 1876, Agda Montelius (1850–1920) embarked on a steamship and left Stockholm for a six-month long journey in Europe together with her husband, the famous Swedish archaeologist Oscar Montelius (1843–1921). This was the beginning of their research activities, leading to the publishing of Oscar’s magnum opus La civilisation primitive en Italie depuis l’introduction des métaux, two decades later. This chapter highlights the presence of Agda in her husband’s international (net)work and illustrates how even less visible actors can be identified and the formation of networks reconstructed by drawing on a combination of sources. Furthermore, the text addresses archival practices that have contributed to the (in)visibility of certain actors in intellectual networks and knowledge transfer systems. The focus is on the Montelius spouses’ travels and work in Italy in the late 1870s and early 1880s, drawing on Agda Montelius’ diaries. Today, Agda is known for her engagement in human rights, but she was also an experienced traveler, amateur archaeologist, and illustrator. By delving into the work of a ‘Great Man’ like Oscar Montelius and his relationship with a supportive spouse, it is possible to come to a more nuanced understanding of how the creation of networks and archaeological knowledge transfer took place, and to highlight the collective effort behind all such projects.