ReGex expression for names

/// <summary>
/// Remove Diacritics from a string
/// This converts accented characters to nonaccented, which means it is
/// easier to search for matching data with or without such accents.
/// This code from Micheal Kaplans Blog:
///    http://blogs.msdn.com/b/michkap/archive/2007/05/14/2629747.aspx
/// Respaced and converted to an Extension Method
/// <example>
///    aàáâãäåçc
/// is converted to
///    aaaaaaacc
/// </example>
/// </summary>
/// <param name="s"></param>
/// <returns></returns>
public static String RemoveDiacritics(this String s)
    {
    String normalizedString = s.Normalize(NormalizationForm.FormD);
    StringBuilder stringBuilder = new StringBuilder();

    for (int i = 0; i < normalizedString.Length; i++)
        {
        Char c = normalizedString[i];
        if (CharUnicodeInfo.GetUnicodeCategory(c) != UnicodeCategory.NonSpacingMark)
            {
            stringBuilder.Append(c);
            }
        }

    return stringBuilder.ToString().Normalize(NormalizationForm.FormC);
    }