The first thing you will want to do is to search databases for matches that are variants of Heis, such as Hice, Heiss, etc. They allow you to search by surname also.
http://www.ysearch.orghttp://www.ysearch.org You will want to create an account there so that you can search again without re-entering his data. The nomenclature is different, so that you need to subtract 1 from the Ancestry values for DYS441 and Y-GATA-H4
http://www.smgf.orghttp://www.smgf.org The first time you search, you will want to save the results page, so that you do not have to re-enter the values. Select Ancestry as the lab before entering data. I checked the surnames and did not find any variants of Heis, but you can check again: