A notable feature of Welsh is a number of agreement phenomena, all of which only occur with pronouns. Finite verbs agree with a following pronominal subject, prepositions agree with a following pronominal complement, and a particle which introduces non-finite clauses agrees with a following pronominal subject. Similarly, nouns have a preceding clitic agreeing with a following pronominal possessor, non-finite verbs have a preceding clitic agreeing with a following pronominal object, and what looks like the non-finite form of bod "be", which introduces certain subordinate clauses, has a preceding clitic agreeing with a following pronominal subject. There seems to be a single phenomenon here. Approaches that involve an abstract level face prob...