 It has also been suggested that the rhyme records the attempt by King Charles I to reform the taxes on liquid measures . He was blocked by Parliament , so subsequently ordered that the volume of a Jack ( 1 / 2 pint ) be reduced , but the tax remained the same . This meant that he still received more tax , despite Parliament 's veto . Hence " Jack fell down and broke his crown " ( many pint glasses in the UK still have a line marking the 1 / 2 pint level with a crown above it ) " and Jill came tumbling after " . The reference to " Jill " ( actually a " gill " , or 1 / 4 pint ) is said to reflect that the gill dropped in volume as a consequence . 
 It <a href='been_done' title='1'><mark>has</mark></a> also been suggested that the rhyme <a href='uninflect' title='2'><mark>records</mark></a> the attempt by King Charles I to reform the taxes on liquid measures . He was blocked by Parliament , so subsequently ordered that the volume of a Jack ( 1 / 2 pint ) be reduced , but the tax remained the same . This meant that he still received more tax , despite Parliament <a href='null_genetive' title='3'><mark>'s</mark></a>veto . Hence " Jack fell down and broke his crown " ( many pint glasses in the UK still <a href='got' title='4'><mark>have</mark></a> a line marking the 1 / 2 pint level with a crown above it ) " and Jill came tumbling after " . The reference to " Jill " ( actually a " gill " , or 1 / 4 pint ) is said to reflect that the gill dropped in volume as a consequence . 
It done also been suggested dat da rhyme record the attempt by King Charles I to reform tdataxes on liquid measures . He was blocked by Parliament , soo subsequently ordered that the volume of a Jack ( 1 / 2 pint ) b reduced , but thdaax remained the same . dis meant tdathe still received more tax , despite Parliament  veto . Hence " Jack fell down and broke his crown " ( many pint glasses in the UK still got a line marking theda/ 2 pint level wit a crown above it ) " and Jill came tumbling after " . The daerence to " Jill " ( actually a " gill " , or 1 / 4 pint ) is said to reflect that the gill dropped in volume as a consequence .