Pedersen rhymes with:
pederson, feddersen, pederson, alderson, andersen, anderson, andersson, balderson, brodersen, broderson, enderson, feddersen, fenderson, granderson, gundersen, gunderson, henderson, manderson, pederson, sanderson, saunderson
Pedersen sounds like:
paterson, patrician, patterson, pederson, pediatrician, peterkin, petersen, peterson, petrosino, petrossian, pettersen, petterson, pettersson