Below is my own update to the Unborn Val'kyr guide that includes all confirmed spawn points. It would be great if this could get optimized/added to the main pet guide.

Code:
ZygorGuidesViewer:RegisterGuide("Zygor's Alliance Pets & Mounts Guide\\Pets\\Unborn Val'kyr",[[
description This guide will walk you through obtaining
description the Undead pet:Unborn Val'kyr
pet 1238
step
'This pet is very rare, so you may be searching for a while.
|confirm
step
label "start"
goto Borean Tundra 48,8
.' The _Unborn Val'kyr_ is level 23. Challenge it to a pet battle and capture it.
..learnpet Unborn Val'kyr##71163 |next "end"
.' Click here if the pet is not available at this location. |confirm
|modeldisplay 48650
step
goto Borean Tundra 80,48
.' The _Unborn Val'kyr_ is level 23. Challenge it to a pet battle and capture it.
..learnpet Unborn Val'kyr##71163 |next "end"
.' Click here if the pet is not available at this location. |confirm
|modeldisplay 48650
step
goto Borean Tundra 32.7,60.1
.' The _Unborn Val'kyr_ is level 23. Challenge it to a pet battle and capture it.
..learnpet Unborn Val'kyr##71163 |next "end"
.' Click here if the pet is not available at this location. |confirm
|modeldisplay 48650
step
goto Sholazar Basin 58.5,22.0
.' The _Unborn Val'kyr_ is level 23. Challenge it to a pet battle and capture it.
..learnpet Unborn Val'kyr##71163 |next "end"
.' Click here if the pet is not available at this location. |confirm
|modeldisplay 48650
step
goto Sholazar Basin 44.47,69.59
.' The _Unborn Val'kyr_ is level 23. Challenge it to a pet battle and capture it.
..learnpet Unborn Val'kyr##71163 |next "end"
.' Click here if the pet is not available at this location. |confirm
|modeldisplay 48650
step
goto Sholazar Basin 36.8,19.4
.' The _Unborn Val'kyr_ is level 23. Challenge it to a pet battle and capture it.
..learnpet Unborn Val'kyr##71163 |next "end"
.' Click here if the pet is not available at this location. |confirm
|modeldisplay 48650
step
goto Icecrown 47.9,86.6
.' The _Unborn Val'kyr_ is level 23. Challenge it to a pet battle and capture it.
..learnpet Unborn Val'kyr##71163 |next "end"
.' Click here if the pet is not available at this location. |confirm
|modeldisplay 48650
step
goto Icecrown 73.8,64.5
.' The _Unborn Val'kyr_ is level 23. Challenge it to a pet battle and capture it.
..learnpet Unborn Val'kyr##71163 |next "end"
.' Click here if the pet is not available at this location. |confirm
|modeldisplay 48650
step
goto The Storm Peaks 42.5,78.5
.' The _Unborn Val'kyr_ is level 23. Challenge it to a pet battle and capture it.
..learnpet Unborn Val'kyr##71163 |next "end"
.' Click here if the pet is not available at this location. |confirm
|modeldisplay 48650
step
goto The Storm Peaks 65,41
.' The _Unborn Val'kyr_ is level 23. Challenge it to a pet battle and capture it.
..learnpet Unborn Val'kyr##71163 |next "end"
.' Click here if the pet is not available at this location. |confirm
|modeldisplay 48650
step
goto The Storm Peaks 29.0,50.0
.' The _Unborn Val'kyr_ is level 23. Challenge it to a pet battle and capture it.
..learnpet Unborn Val'kyr##71163 |next "end"
.' Click here if the pet is not available at this location. |confirm
|modeldisplay 48650
step
goto Dragonblight 82,66
.' The _Unborn Val'kyr_ is level 23. Challenge it to a pet battle and capture it.
..learnpet Unborn Val'kyr##71163 |next "end"
.' Click here if the pet is not available at this location. |confirm
|modeldisplay 48650
step
goto Dragonblight 26.9,54.1
.' The _Unborn Val'kyr_ is level 23. Challenge it to a pet battle and capture it.
..learnpet Unborn Val'kyr##71163 |next "end"
.' Click here if the pet is not available at this location. |confirm
|modeldisplay 48650
step
goto Dragonblight 64.4,43.7
.' The _Unborn Val'kyr_ is level 23. Challenge it to a pet battle and capture it.
..learnpet Unborn Val'kyr##71163 |next "end"
.' Click here if the pet is not available at this location. |confirm
|modeldisplay 48650
step
goto Zul'Drak 57.0,39.8
.' The _Unborn Val'kyr_ is level 23. Challenge it to a pet battle and capture it.
..learnpet Unborn Val'kyr##71163 |next "end"
.' Click here if the pet is not available at this location. |confirm |next "start"
|modeldisplay 48650
step
goto Zul'Drak 75,22
.' The _Unborn Val'kyr_ is level 23. Challenge it to a pet battle and capture it.
..learnpet Unborn Val'kyr##71163 |next "end"
.' Click here if the pet is not available at this location. |confirm |next "start"
|modeldisplay 48650
step
goto Zul'Drak 24.3,63.7
.' The _Unborn Val'kyr_ is level 23. Challenge it to a pet battle and capture it.
..learnpet Unborn Val'kyr##71163 |next "end"
.' Click here if the pet is not available at this location. |confirm |next "start"
|modeldisplay 48650
step
goto Grizzly Hills 61,18
.' The _Unborn Val'kyr_ is level 23. Challenge it to a pet battle and capture it.
..learnpet Unborn Val'kyr##71163 |next "end"
.' Click here if the pet is not available at this location. |confirm |next "start"
|modeldisplay 48650
step
goto Grizzly Hills 79.60,50.79
.' The _Unborn Val'kyr_ is level 23. Challenge it to a pet battle and capture it.
..learnpet Unborn Val'kyr##71163 |next "end"
.' Click here if the pet is not available at this location. |confirm |next "start"
|modeldisplay 48650
step
goto Grizzly Hills 26,57
.' The _Unborn Val'kyr_ is level 23. Challenge it to a pet battle and capture it.
..learnpet Unborn Val'kyr##71163 |next "end"
.' Click here if the pet is not available at this location. |confirm |next "start"
|modeldisplay 48650
step
goto Howling Fjord 71.91,43.39
.' The _Unborn Val'kyr_ is level 23. Challenge it to a pet battle and capture it.
..learnpet Unborn Val'kyr##71163 |next "end"
.' Click here if the pet is not available at this location. |confirm |next "start"
|modeldisplay 48650
step
goto Howling Fjord 45,43
.' The _Unborn Val'kyr_ is level 23. Challenge it to a pet battle and capture it.
..learnpet Unborn Val'kyr##71163 |next "end"
.' Click here if the pet is not available at this location. |confirm |next "start"
|modeldisplay 48650
step
goto Howling Fjord 68.10,67.63
.' The _Unborn Val'kyr_ is level 23. Challenge it to a pet battle and capture it.
..learnpet Unborn Val'kyr##71163 |next "end"
.' Click here if the pet is not available at this location. |confirm |next "start"
|modeldisplay 48650
step
label "end"
.' Congratulations, you have obtained the _Unborn Val'kyr_ pet!
]])
*edited to remove extra spaces in goto statements that prevented the guide to load.

If you want to use this guide, change the name and save the entire thing as Guide01.lua in the ZygotGuidesViewer folder.