Issues with Workspace Structure?

I'm having an issue trying to figure out how to set up multiple boards and then connect/mirror them. I want one board to be the master list of all client details. I want another board that has 4 groups of Activities with multiple and varied tasks under each activity group. Then I want to create a 3rd board where I can add a client name into the 3rd board based upon 2 text fields in the Client Board (First and last names) and also then assign various tasks to that client from the 2nd Activities/task Board. I'm having trouble with figuring out how to handle the Item Name column in the 3rd board since I don't really need it since I want the first and last name from the 1st board to marry to tasks on the 2nd board. I'm not so sure I'm going about this correctly from a structure perspective though and need so help or suggestions on a better approach. Thank You!