Neither field is required if you click search without filling out the form all the database records will be returned. That could be helpful if you wanted to see all the records on the site. However, if you filled out at least one of the blanks you will come closer to finding what you need. To find all Yates in the database simply type Yates in the last name field, as well to find the entire list of John's regardless of last name type John in the first name field. This search tool will not list all the variations and spellings of a name. For instance I have ran across several Yates ancestors that spelled their name Yeats an Yeates so check different spellings of the last name you are looking for.