Alfrida of the Yale
was the wife of Gundolpho Bolger.1
Together they had three children: Gundahar, Rudolph and Gudahad. Alfrida's year of birth is unknown but she was likely born sometime around T.A. 2731, the birth year of her husband Gundolpho.
Alfrida's name refers to the region The Yale in the Shire.
1 - J.R.R. Tolkien, The Lord of the Rings, Appendix C, Bolger of Budgeford