VBA Excel: modify dynamic named range code - excel

Question

Newbie question: I have module, originally made by Roger Govier.
It uses an input cell header and creates a dynamic named range for the non empty cells positioned under header. The created named range will be labeled as the value of the header cell.
Private Sub CreateNamedRange(header As range)
Dim wb As Workbook
Dim WS As Worksheet
Dim rStartCell As range
Dim rData As range
Dim rCol As range
Dim lCol As Long
Dim sSheet As String
Dim Rowno As Long
' get table location
Set rStartCell = header
Set WS = rStartCell.Worksheet
Set wb = WS.Parent
sSheet = "'" & WS.Name & "'"
With rStartCell
Rowno = .row
Set rData = .CurrentRegion
End With
Set rData = WS.range(rStartCell, WS.Cells(Rowno, rStartCell.Column))
Set rCol = rData.Columns
lCol = rCol.Column
wb.Names.Add Name:=Replace(rCol.Cells(1).Value, " ", "_"), _
RefersToR1C1:="=" & sSheet & "!" & rCol.Cells(2).Address(ReferenceStyle:=xlR1C1) & ":INDEX(C" & lCol & ",LOOKUP(2,1/(C" & lCol & "<>""""),ROW(C" & lCol & ")))"
End Sub
I want to modify this code so that instead of creating a named range it only returns the returns the range of the what would have been the named range.
Example:
We have a header in A1, and data in A2:A5.
Now: If we call CreateNamedRange(.range("A1")), it creates a dynamic named range for A2:A5.
Goal: If we call CreateNamedRange(.range("A1")) it returns .range("A2:A5") to a variable in the VBA code:
dim myRange As Range
set myRange = CreateNamedRange(.range("A1"))

Answer 1

First thing you should note is that Subs do not return any value and thus myRange = CreateNamedRange(.range("A1")) does not make any sense (with your Sub; it does make sense with the Function in this answer).
The function below returns a range, in the same column that the input range, starting from the next row and including all the ones below until finding a blank cell. This range is called "anyName" (and thus you can access it via Range("anyName")).
Private Function CreateNamedRange(header As Range) As Range
Dim curRow As Long: curRow = header.Row + 1
Set tempRange = header.Worksheet.Cells(curRow, header.Column)
Do While (Not IsEmpty(tempRange))
curRow = curRow + 1
Set tempRange = header.Worksheet.Cells(curRow, header.Column)
Loop
Set CreateNamedRange = header.Worksheet.Range(header.Worksheet.Cells(header.Row + 1, header.Column), header.Worksheet.Cells(curRow, header.Column))
CreateNamedRange.Name = "anyName"
End Function

Answer 2

If you already have the beginning cell activated you can just use
Set myRange = Range(ActiveCell.Address, ActiveCell.Offset.End(xlDown).Address)
to set your range for all entries below the active cell. If you don't have it activated, you can just use your rstartCell reference with an offset
Set myRange = Range(rStartCell.Offset(1), rStartCell.Offset(1).Offset.End(xlDown).Address)
Then you can just add the named range in the next line