Relative pronoun dropped

Ishiguro conspicuously drops  relative pronouns in his renderings of dialogs in his medieval story .

What can it be  makes everyone, yourself included, forget she ever lived?

Was there something that stranger said just now  got you thinking of it?

But why do you say it's my wishes always  stood in the way of it?

He has peasants and noblemen all speak that way, perhaps to create a feel of medieval times  .  But is that in fact a feature  of Old English?   Can it be a valid style  even today?  A dialectal feature ?