Easily change the default WordPress from email name and from email address.
WordPress Default Email Sender Name And Email Address Customizer
ユーザー管理画面で、名前の表示順や入力順を「名」→「姓」から「姓」→「名」にします。
Replaces the username for author permalinks with the users display name. Returns a 404 if the author permalink using the actual username is used.
Allows you to change the value of "Display name publicly as" in user profiles to any string
This plugin allows one to personalise pages, posts or wordpress single user emails.