Bicknell on 16 April 1784 married, at
St Philip's Church, Birmingham,
Sabrina Sidney, the girl he had selected with Thomas Day at Shrewsbury about 15 years earlier. She had spent some time living with Bicknell's mother. After Day dropped his plan to marry her, she had remained a ward of
Richard Lovell Edgeworth, and lived in the West Midlands. After Bicknell's death she became housekeeper and manager for
Charles Burney the younger, a schoolfellow of her late husband at Charterhouse. There were two sons of the marriage,
John Laurens Bicknell and Henry Edgeworth Bicknell, young boys on their father's death. Sabrina as widow had financial support from Day and Edgeworth, and
George Hardinge and
Anna Seward organised collections for her. John Laurens Bicknell, educated at Burney's school, became a solicitor and
Fellow of the Royal Society. Charles Bicknell, John's younger brother and solicitor to the Admiralty and the Prince Regent, became father-in-law to
John Constable. His eldest daughter Maria Elizabeth Bicknell married Constable in 1816. ==External links==