You may offer family or couple memberships in which multiple Constituents can be tied to the same membership. However, you may notice that only one member is listed on a membership card when printing the cards. This solution provides the steps to resolve this.
The membership cards printed and the names on those cards are directly tied to the members listed on the membership. Verify that all members are listed on the Summary Tab of the membership record and cards are issued for the members you would like to print for. You can also edit how the members' names appear on the membership cards by editing them in the Membership Cards section on the Summary tab.