passport application ????

i have been looking at documents required.
born before 1983
do i need to send
parents marriage cert,
fathers birth cert?
both of these do not exist, as born in village and at that time , no documents issued, everything was verbal.

my birth cert. is in native language. - do i have to have this translated into english?
also , this just has fathers name on it , not mothers

passport - do i need to send current unexpired one or first one which has ILR on it and was the one on which i first came to uk

only your naturalisation certificate and your current passport as well as the passport you used to enter the country are required:

You have a certificate of naturalisation or registration
You’ll need both:

your naturalisation or registration certificate
the passport you used to come into the UK or the foreign passport you’re included on



The other categories on the website do not apply to you as you seem to have been naturalised.