Clarification for Proof of Relationship Status to claim points

[srivid1]

Our Relative in Canada has been long back settled as a Citizen,however he is my father's cousin brother(his mother's side blood relative).When we check the immigration application for Federal Skilled Worker Class/category,we should showcase proof of this relation (common parent name in any documentation between my father and his cousin brother,i.e.my uncle).
Also should I request my uncle to send his Birth Certificate copy - notarized by local Canadian's officier?

 

[srivid1]

The problem is ,my uncle will not have any family name(documentation) related to my father ,as he is mother's side relative.
How can I use his credential and score points for relation available in canada(citizen)...any covering letter explaining this situation to immigration along with other documentation

 

[Abu Hassaan]

Srivid1,

As per my understanding, this relation doesn't fall under relatives category which is "Child of a Grandparent". He is cousin of your father which means your father and uncle have different parents but not same. If he was brother/sibling of your father having same parents, then he could have been considered a relative.

The problem is ,my uncle will not have any family name(documentation) related to my father ,as he is mother's side relative.
How can I use his credential and score points for relation available in canada(citizen)...any covering letter explaining this situation to immigration along with other documentation