"I would just like to trace him and say thank you. What a credit to your country this man is, he left us with a lovely impression of New Zealand," he said.
"I would really like to get hold of this Kiwi to give a gift of a Welsh shirt, so he can support us from the other side of the world when we play."
The pair met again today- this time they knew each other's names.
Turnbull said their reunion at a pub in London's Leicester Square went well.
"It was really good to see him again. We had a few drinks."
The Welshman even turned up with gifts for the Kiwis.
"He brought red woollen hats and the Welsh rugby jerseys for us."
The Welshman is a professional bee keeper and gave the Kiwi duo some of his prize-winning honey.
In exchange, Turnbull gave Llewelyn-Jones more All Black jerseys - after losing the first one given to him.
"He was over the moon."
Turnbull said the atmosphere in London in the lead-up to tomorrow's trans-tasman final was "pretty electrifying".
"Rugby attracts a certain kind of person and it infuses itself through the spirit of the game where everyone seems to get along.
"It's a good opportunity to make new friends," he said.
His new Welsh friend was now an All Blacks fan.
When NZME News Service called him this morning, he was at the pub and proudly wearing his new black jersey.
There was no chance the Welshman would lose it this time as he would be wearing it for the final.
"Nobody is getting this off me now until I go back to work on Monday," he said.
Llewelyn-Jones said it was always a dream of his to see the haka live.
This came true when he watched the All Blacks play Georgia in Cardiff.
"That was the conversion I needed."
The pair are planning to meet in the fan zone area in Richmond for the final- just around the corner from Twickenham.