You can set the "watch" option to maybe the last name field as the field to watch. That sort of links it to the entry specific to that name, I do believe. Then it will auto populate the radio/checks from the entry linked.

Thank you. The problem is that there is no watch option for Radio options and check box fields.....
For text fields the lookup option, which enables the watch option, is within the default value....nothing like this exists for check / radio...

Do you have a license for Formidable Pro? You need Pro to use lookup fields. 

The attached shows the elements with a red circle that are available for a text filed type but not for a radio button array or checkbox array. Hence, its easy to do the auto population for text type fields but I am still needing a solution for check box and radio.
Thank you.

Both Bobby and I suggested using Lookup fields. You are not using Lookup fields. You are using the lookup option of a standard text field. While this will get you what you want with a single-line text field, as you already mentioned, the lookup option doesn't exist with radio buttons and checkboxes. However, Lookup fields can be displayed as radio button and checkbox fields. See this: https://formidableforms.com/knowledgebase/lookup/