▁were ▁once ▁used ▁as ▁a ▁basis ▁for ▁representation ▁in ▁the ▁Del aware ▁General ▁Assembly , ▁and ▁while ▁their ▁names ▁still ▁appear ▁on ▁all ▁real ▁estate ▁transactions , ▁they ▁presently ▁have ▁no ▁meaning ful ▁use ▁or ▁purpose ▁except ▁as ▁a ▁ge ographical ▁point ▁of ▁reference . ▁ ▁B ound aries ▁and ▁formation ▁ ▁White ▁Clay ▁Creek ▁H undred ▁is ▁that ▁portion ▁of ▁New ▁Castle ▁County ▁that ▁lies ▁north ▁of ▁the ▁Christ ina ▁River ▁and ▁south ▁and ▁west ▁of ▁White ▁Clay ▁Creek , ▁except ing ▁that ▁it ▁also ▁includes ▁the ▁small ▁area ▁west ▁of ▁the ▁Christ ina ▁River ▁immediately ▁west ▁of ▁New ark , ▁and ▁ex cludes ▁a ▁larger ▁area ▁north ▁and ▁east ▁of ▁the ▁Christ ina ▁River ▁generally ▁from ▁the ▁old ▁Pennsylvania ▁Rail road ▁tracks ▁to ▁Co och ’ s ▁Bridge . ▁ ▁It ▁was ▁formed ▁from ▁Christ iana ▁H undred ▁and ▁New ▁Castle ▁H undred ▁in ▁ 1 7 1 0 ▁and ▁was ▁named ▁for ▁White ▁Clay ▁Creek ▁that ▁flows ▁along ▁its ▁northern ▁boundary . ▁▁▁ ▁Origin ally , ▁the ▁default ▁boundary ▁of ▁Del aware ▁and ▁Maryland ▁was ▁the ▁vague ▁height ▁of ▁land ▁between ▁the ▁Del aware ▁River ▁and ▁Ch es ape ake ▁Bay ▁d rain age ▁bas ins ▁and ▁White ▁Clay ▁Creek ▁H undred ▁extended ▁to ▁that ▁point . ▁ ▁With ▁the ▁running ▁of ▁the ▁Mason – D ixon ▁line ▁in ▁ 1 7 6 7 , ▁the ▁western ▁boundary ▁of ▁Del aware ▁was ▁established ▁in ▁its ▁present ▁location ▁and ▁became ▁White ▁Clay ▁Creek ▁H undred ’ s ▁western ▁boundary . ▁