Longden rhymes with:
uniden, airmen, biogen, bruntjen, bullpen, businessmen, canadienne, energen, euroyen, flagmen, gunmen, julianne, mahen, mailmen, middlemen, minutemen, neupogen, nexgen, parisienne, playpen, powergen, repairmen, shenzhen, synergen, tiananmen, turkmen, uniden, urgen, valencienne, weathermen
Longden sounds like:
lamston, langdon, langston, langton, lansdown, lansdowne, lanston, lengthen, lenington, limestone, loewenstein, longtime, longtin, longton, lowenstein, lumsden, lunchtime