Both the name and birthdate have to be duplicated???

If yes...

I would insert a new column and concatenate the name and birthdate.

=a1&"...."&text(b1,"yyyy-mm-dd")

Then use the techniques at Chip Pearson's site:
http://www.cpearson.com/excel/Duplicates.aspx

orange wrote:

I have a spread sheets with a couple of thousand names and birth dates. I am
wanting to locate the duplicate name and birth date and put these in another
column.
Any suggestions?

--

Dave Peterson