Grandparents details in the passport's application form

[eumumto2]

Hello,
I started to fill in the form for the British passport for my child.
There is a section 4, where I have to give details of my child's grandparents. The problem is that my husband's parents are passed away already. And my hubby doesn't know their marriage date and father's correct town of birth.
What should I do in this situation?
Thanks.

[eumumto2]

Also, will I need to search for grandparent' documents? will they ask them as supporting docs?

I understand that I need to fill in this section, because both parents of my child was born abroad.

[noajthan]

Hello,
I started to fill in the form for the British passport for my child.
There is a section 4, where I have to give details of my child's grandparents. The problem is that my husband's parents are passed away already. And my hubby doesn't know their marriage date and father's correct town of birth.
What should I do in this situation?
Thanks.

Just put "Not known" if such details are not known. It often happens.