Following is a response from DHS staff member, Tom Pullum:
I suggest that you use the PR file, but just keep the line for the household head (the household member with hv101=1), since you have a special interest in that person's characteristics. The following Stata lines show how to do that. Good luck!
* specify workspace
cd e:\DHS\DHS_data\scratch
use "...PKPR71FL.DTA", clear
keep if hv101==1
gen cluster=hv001
gen hh=hv002
sort cluster hh
save PKtemp.dta, replace
use "...PKKR71FL.DTA", clear
gen cluster=v001
gen hh=v002
sort cluster hh
merge cluster hh using PKtemp.dta
tab _merge
* _merge is 2 for households that do not have a child in the KR file
keep if _merge==3
drop _merge