Relative Clause describing someone the reader knows well

To me it sounds strange to use a relative clause when describing someone or something both I, the writer, and the reader know about well.

Here is an example that sounds strange to me:

Talking to my mother about my brother/her son:

a. Yesterday I spoke to George, who told me he bought a new game for his PlayStation.

Instead, I feel it sounds less strange to make it two separate main clauses:

b. Yesterday I spoke to George, and he told me he bought a new game for his PlayStation.

But I would find a absolutely fine if 'George' were replaced by someone both my mother and I know not so well.

Does anyone agree with me??

Thanks