C# Regex Validate two names or more
<p>Good Afternoon,</p>

<p>I would like a regex to validate if the user typed two names or more and not only the first name, as in this example:</p>

<p>Ex: Fabrício (no match)</p>

<p>Ex: 
Fabrício Oliveira (match)
Fabrício Oliveira Xavier (match)</p>

<p>Note: The expression must contain accents</p>