View Message

The information about Eider as feminine of Eder is not correct. As you can check at Euskaltzaindia (http://www.euskaltzaindia.com/eoda/izenak.asp?onoma=izenak&hizkuntza=es&testua=eider), Eider is a newly made name in Basque, not from Eder but from the European bird name and/or from the Gaelic Eideard.

---

And about the rules for feminizing male names, some names just change the masculine -a to an -e (Koldobika > Koldobike), other names add an -a (Sabin > Sabina)...

---

Lumia
http://onomastica.mailcatala.com