5: Roisin de Burgh -New Alternate Name (NP)
OSCAR finds the name registered exactly as it appears in February of 2020, via the Middle.
Roisin inghean Uí Dhúgáin
Submitter desires a feminine name.
No major changes.
Language/Culture most important.
Culture (medieval Irish) most important.
Meaning (medieval version of Dugan surname) most important.
Roisin is a registerable 15th/16th century Irish given name, per the January 2020 LoAR cover letter.
The word inghean 'daughter' follows the standard post-1200 Gaelic construction summarize in SENA Appendix A.
Uí Dhúgáin from the Irish surname meaning daughter of a descendant of O'Dubhagáin. "The Annals of the Four Masters" references several men with the surname O'Dubhagáin.