Sending e-mail using alias on iphone

I have an iCloud (mobileme) account which has 2 alias emails as well as the main one.

When I send an email from alias 1 (my husband), it uses the Full name of alias 2 (mine) on the iPhone.

Main - .me and .mac email address

Alias 1 - only a .me email address

Alias 2 - .mac and .me email address

It doesn't do this on Apple Mail or on the web based iCloud - only on the iPhone.

Has anyone else had this problem or know how to resolve it?

Many thanks!