Waldren rhymes with:
waldron, waldron, cauldron, children, grandchildren, schoolchildren, stepchildren, waldron, audran, cauldron, chadron, children, condron, excedrin, gendron, grandchildren, hendron, hydron, kindran, madron, octahedron, padron, philodendron, polyhedron, ravindran, rhododendron, schoolchildren, squadron, stepchildren, tetrahedron, vorndran, waldron
Waldren sounds like:
waeltermann, waldhorn, waldron, waldrum, wilderman, wiltron