Seems like I'm missing something simple here to name a dynamic range. I'm trying to do this without creating a variable for the last row, etc.
With wsLists.Range("A1")
.Names.Add Name:="supplierSitesRng", RefersTo:=Range(.Offset(1, 0), .End(xlDown))
End With
With wsLists.Range("A1")
.Names.Add Name:="supplierSitesRng", RefersTo:=Range(.Offset(1, 0), .End(xlDown))
End With