[3] William's brother, Alban Dorrinton, was nine years his senior and also played club cricket, and one first–class match for Kent in 1836.

[7] In 1837, Dorrinton continued to play only sporadically for Kent, appearing in four matches that season, scoring seven runs overall at an average of 1.00.

[5] In 1842 his batting continued to return career best figures with 118 runs from eight matches at 9.83, including a high score of 31.

[5] It was during this season that he supplemented his career at Kent by playing for Hampshire, prior to the clubs elevation to full county status.

[5] He continued to represent both Kent, Hampshire and the MCC in 1845, playing 19 matches and bettering his previous year with the highest statistics of his career, 522 runs at 15.35, with two half centuries and a high score of 65.

He also took 12 catches and performed eight stumpings[5] He left Suffolk at the end of 1847, to once again begin the next season playing only for Kent.

Opening the batting, he scored three and one, took three catches and performed one stumping,[9] however he did not return to the cricket field again, and just over a year later died in his home town in Kent.