In order to display the name of the member of a household in a report, the query used to run the report must actually contain the member account. If the query only returns the head of household accounts, the HH Member Name field will be blank on the report.

In order to see the names of both members of a household, a custom relationship report can be created. For more information on how to create and run this type of report, please review the Run a custom relationship report guide.