Brentano and Medieval Ontology

Since the first discussion of Brentano’s relation to (and account of) medieval philosophy by Spiegelberg in 1936, a fair amount of studies have been dedicated to the topic. And if those studies focused on some systematic issue at all, the beloved topic of intentionality clearly occupied a hegemonic position in the scholarly landscape . The following pages consider the question from the point of view of ontology, and in a twofold perspective: What did Brentano know about medieval ontology and what kind of access did he have to that material (section 1)? What kind of use did Brentano make of medieval material in his own philosophy, and with what kind of results (section 2)?