Fawkes and his feathers

[justcarol67]

No: HPFGUIDX 93452

Eustace_Scrubb: 
<snip> Also, how did Tom Riddle come to be chosen by a wand containing
one of those feathers?  (I'm assuming he bought it when he was still
Tom, as I can't quite imagine Voldemort strolling into Ollivanders's and
purchasing a wand in the usual way.  "Yew wood, phoenix feather core,
12 inches...excellent for evil overlord work!") <snip>

Carol:
I imagine a scene very much like the one that occurred with Harry.
Little Tom, an eleven-year-old half-blood orphan raised by Muggles 
enters Ollivander's shop (perhaps accompanied by Ogg, the gamekeeper,
or some other Hogwarts representative). Ollivander senses at once that
this boy has extraordinary powers, and after some preliminary trials
with other wands to test his theory, he hands Tom a rare treasure, the
most powerful wand in his shop, which lies on a special shelf next to
its "brother"--also destined, Ollivander knows, for a very powerful
wizard, but not this wizard. Tom takes the wand, gives it a good
swish, and it sends out green and silver sparks (as Harry's sent out
red and gold ones). I certainly don't think it was designed for "evil
overlord work," especially given its phoenix feather core, but maybe
the yew wood (as opposed to the holly) gave it a Slytherin affinity so
that it was right for Tom--a little boy with great potential who had
not yet chosen evil over good.

I have no canon to support any of this. It's just the way I see the
scene in my own mind.

Carol, who does not believe that Ollivander is evil or that he would
design a wand whose purpose was to wreak havoc with the WW