Goulston rhymes with:
allston, alston, boyleston, boylston, carlston, charleston, colston, coulston, egelston, eggleston, gholston, golston, halston, halston's, holston, huddleston, olsten, pellston, polston, ralston, raulston, rolston, roulston, walston, woolston
Goulston sounds like:
gallstone, gholston, glaciation, glickstein, glisten, golston