ates ▁into ▁a ▁single ▁community ▁the ▁four ▁ham lets ▁of ▁C lin ch ▁Street , ▁F enn ▁Street , ▁Sh arn al ▁Street ▁and ▁High ▁Hal st ow ▁Street . ▁ ▁History ▁The ▁ 1 0 th - century ▁Gra de ▁I ▁listed ▁church ▁of ▁St ▁Margaret ▁at ▁High ▁Hal st ow ▁ ▁was ▁mentioned ▁in ▁the ▁Dom es day ▁Book ▁of ▁ 1 0 8 6 , ▁and ▁was ▁built ▁on ▁the ▁highest ▁point ▁of ▁the ▁H oo ▁Pen ins ula , ▁over looking ▁the ▁rivers ▁of ▁the ▁Th ames ▁and ▁Med way . ▁ ▁In ▁the ▁ 1 8 th ▁century ▁pover ty ▁and ▁mal nut r ition ▁were ▁w ides p read ▁across ▁the ▁pen ins ula , ▁with ▁High ▁Hal st ow ▁no ▁exception ; ▁adult ▁life ▁expect ancy ▁was ▁then ▁about ▁ 3 0   year s , ▁less ened ▁by ▁ag ue , ▁or ▁mar sh ▁fe ver , ▁the ▁names ▁for ▁mal aria , ▁which ▁pro l ifer ated ▁in ▁the ▁North ▁Kent ▁Marsh es ▁and ▁water log ged ▁far ml and , ▁a ▁strong hold ▁of ▁the ▁mos qu ito . ▁The ▁cause ▁of ▁mal aria ▁was ▁discovered ▁in ▁ 1 8 9 0 , ▁and ▁within ▁five ▁years ▁the ▁number ▁of ▁people ▁falling ▁ill ▁with ▁the ▁disease ▁decre ased ▁sharp ly ▁as ▁far ml and ▁and ▁mar sh es ▁were ▁dra ined . ▁This ▁task ▁was ▁performed ▁in ▁no ▁small ▁way ▁by ▁Henry ▁P ye , ▁after ▁he ▁moved ▁to ▁the ▁area . ▁