This paper deals with a range of issues in the interaction among syntax, morphology and prosodic structure-building, by way of a detailed analysis of the special properties of simple subject pronouns in Irish finite (that is, verb-initial) clauses. It argues that such pronouns are incorporated into the verbal complex by way of a species of head-movement whose existence has been mooted before but not (as far as we know) attested. A particular focus is on how that incorporation interacts with ellipsis and with the mechanisms realizing Verum Focus.