MPNP Application, Relatives in Ontario

[desi_jatt]

Hi

I am filing a MPNP application for My Brother in law (Husband's Brother, his wife being the principal applicant).

now my question is that My husband had 3 paternal Uncles living in Ontario with their families (2 not even on talking terms) and a cousin living in BC.

so my sister in law should fill the details of all these relatives or just leave them .

My husband came to Canada under Quebec skilled worker and he does not have to tell the CIC about these relatives,as there was no requirements/form for that (assuming they don't know about them),

but my father in law has visited Canada on visitor visa 3-4 times, he has filled his brother's details on his application every time.

so what are my options,

should we leave them or if we give there details , is this gonna affect their MPNP application.

Thanks.