Man pages matching name pmlookupname in section 3:

pmLookupName.3.en	debian 10 / libpcp3-dev
pmlookupname.3.en	debian 10 / libpcp3-dev
pmLookupName.3.en	debian 11 / libpcp3-dev
pmLookupName.3.en	debian 12 / libpcp3-dev