Gaston's rhymes with:
austin's, boston's, boyleston's, boylston's, carstens, charleston's, cranston's, hesston's, houston's, intestines, johnston's, jostens, justin's, karstens, livingston's, pistons, preston's, princeton's, ralston's, thaxton's
Gaston's sounds like:
gadding, gadomski, gathings, gating, gatting, gdansk, geddings, geeting, getting, gettings, giddens, giddings, gitano's, githens, gittens, gittings, gittins, goading, godding, godines, godinez, goding, goetting, gooden's, goodenough, gooding, gooding's, goodman's, goodness, goodnough, gostomski, guidance, guiding, gusting, gutting