Havelock rhymes with:
ashlock, blacklock, carlock, deadlock, erlach, flintlock, gridlock, hammerlock, hemlock, kalok, landlock, madlock, matchlock, matlock, niblock, oarlock, overlock, padlock, portlock, roadblock, sealock, shedlock, sherlock, shylock, spurlock, subhlok, tatlock, warloeck, wedlock, wheelock, whitelock, whitlock, woodlock
Havelock sounds like:
hapless, havelka, havlicek, havlik, hobbles, hoeflich, hopefuls, hopeless, hovels, hubbell's, hubble's, hybl's