This dissertation defends a strong version of the view that linguistic surface complexity is the product of interactions between deep syntactic mechanisms and shallow interface-specific mechanisms. I argue that current developments in the theory of locality in Distributed Morphology (Embick 2010, Marantz 2013) impose boundaries on syntactic…

As is well known, the Insular Celtic languages (Irish, Scots Gaelic, Welsh, Breton and the now-extinct Manx and Cornish) utilize a class of verbal abstracts known as "verbal nouns" to perform the functions that are fulfilled in other Indo-European languages by infinitives and supines. Yet in many ways the Celtic verbal noun remains somewhat of an…