Burgundians and Alemanni moved through the lower Main region, but it was only under the Franks (after 500 AD) that the population density again rose noticeably.

Their settlements often did not simply grow out of the formerly Roman cores but included separate newly established sites.

The Frankish settlement was likely located nearby, on the right bank of the Gersprenz, north of the former Roman structures.

The parish church was dedicated to the saints Marcellinus and Peter, the patrons of Seligenstadt Abbey, to which Stockstadt temporarily belonged.

At the site of the current church, the Leonhardskirche, remains of an earlier structure only date from the Gothic period.

[3]: 65–6 Stockstadt am Main had its first documentary mention as early as the 9th century, if only through some townsmen who were obliged to pay taxes.