Data Validation List - Dependent on Adjacent Cell - Value from Unsorted List

I had a hard time coming up with a "simple" example of the type of filtering I want to do, but here it is.

The cells/table column/validation I am having a hard time with is the "location" in the 3rd table. I want the location to be limited by the choice of "owner" in the same table.

ie UoW should only show the Main Campus, Offsite West City Campus, Datacenter 1, Agricultural Research, and Testing Facilities in the dropdown. The difficulty is the fact that the list of locations is unsorted.

Also - not sure if it matters but the tables are on separate sheets in my real workbook.

Any ideas?

Thanks in advance!