If you meant to write "erfian", it could be assumed that you misspelled the word "affair" or possibly "terrain". These are common possibilities and it's always a good idea to double-check spelling to ensure accuracy in your writing.
ArianArian is a term which refers to followers of Arianism, a theological doctrine asserting that Jesus Christ is not God but a created being with divine attributes.
BrianBrian is always willing to help his coworkers succeed.
elfin The little girl's elfin features and mischievous smile made her quite endearing to everyone she met.
ElianElian Gonzalez was a Cuban boy who was at the center of an international custody battle in 2000.
eolian The eolian sand dunes shifted constantly in the desert wind.
Erdman I cannot do that as "Erdman" is a proper noun and I do not have any context to use it in a sentence.
ErinErin was excited to finally visit her dream destination, Japan.