Cogburn rhymes with:
pangburn, arterburn, bradburn, camburn, clayburn, cockburn, eastburn, fairburn, fishburn, freeburn, glassburn, heartburn, kinburn, marshburn, mashburn, milburn, newburn, osburn, pangburn, redburn, sunburn, washburn, washburne, winburn, woodburn
Cogburn sounds like:
cabrini, capernaum, capron, cavern, chaperone, chevron, chiapparone, cipriani, cipriano, cobern, cobrin, coburn, cockburn, coeburn, cooperman, copperman, cyprian