Words and Proper Names

fo·ceird

2691.
Rosén (Hannah): Periphrasis and figura etymologica in some sources of Middle Irish.
In ZCP 43 (1989), pp. 53–83.
Examines the various syntactical patterns in which the figura etymologica is attested, and argues that in the type where the verbal noun is the topic of a cleft sentence the cognate finite verb lost its lexical prominence and gave way to an auxiliary verb, thus facilitating the proliferation of the periphrastical construction with do·gní, do·beir, fo·ceird, etc.