> "Use single or multiple fields depending on your user’s needs. Not everyone’s name fits the first-name, last-name format. Using multiple name fields mean there’s more risk that a person’s name will not fit the format you’ve chosen and that it is entered incorrectly."
and
> "Avoid asking users for their title. It’s extra work for them and you’re asking them to potentially reveal their gender and marital status, which they may not want to do."
and
> "If your service stores personal information, you should allow users to update their details, including their name. Allowing users to change their name helps your service respect their personal identity. It also means they can continue using your service without having to start over. People change their name for many reasons. For example, because of a change in marital status, family situation or gender. Avoid making it hard for users to change their name. As well as causing them distress, it may make them reluctant to use your service."