I am not sure how to include a name in the title, but there probably is a way...
However, if you are creating a scheduled dashboard, you could have a panel in your dashboard like this:
| makeresults
| eval previous_month_begin = relative_time(now(),"-1mon@mon")
| eval "Previous Month Start" = strftime(previous_month_begin, "%B %d, %Y")
| eval previous_month_end = relative_time(now(),"@mon-1m")
| eval "Previous Month End" = strftime(previous_month_end, "%B %d, %Y")
| eval heading = 'Previous Month Start' " to " 'Previous Month End'
| fields heading
which makes a beautiful heading. You might want to show it as a single value panel at the top of the dashboard.
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