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