Datapoint Welsh English/Relativizer that or what in non-restrictive contexts

Variety: Welsh English
Feature: Relativizer that or what in non-restrictive contexts
Value: D - attested absence of feature
Informants: Robert Penhallurick

Examples

Example 1098:
I know a man what'll help you.

Source: Penhallurick, Robert J. 1991: 179

Example 1099:
I'm the one that's there normally .
Example 1100:
It's the English people that brought these horrible words isn't it.
Example 1101:
There were only four women in Tregaron – I won't name them – that used to go to the pubs here.
Example 1102:
You might get the odd showman what is really Scotch.

Source: British Broadcasting Corporation 2005: Talbot.Green