Allston rhymes with:
alston, halston, halston's, ralston, raulston, walston, alston, boyleston, boylston, carlston, charleston, colston, coulston, egelston, eggleston, gholston, golston, goulston, halston, halston's, holston, huddleston, olsten, pellston, polston, ralston, raulston, rolston, roulston, walston, woolston
Allston sounds like:
allegation, alliston, allocation, alsatian, alsthom, alston