I'm not really sure if it was this Richard Knibbs or not, but I'm sure he'd forgive me if it was another Richard Knibbs of Deddington. Jackson's Oxford Journal from June 1859 reports the following:
Wootton North Division.- Deddington, June 3.
Before J. Lechmere, Esq., Colonel Bowles, the Rev. W. C. Risley, and the Rev. T. Curme.
Edwin Butler, of Aynho, was charged with being drunk and disorderly at Clifton, about one o'clock in the morning of Sunday 15th may; ordered to pay 5s., with a caution to avoid being drunk again, or he would not be so leniently dealt with.
Robert French, of Deddington, was summoned for being drunk and disorderly at the same place on the 13th May, and assaulting P.C. Cartwright in the execution of his duty; and Richard Knibbs of Deddington, was charged with resisting P.C. Hawkins in the execution of his duty on the said occasion, by trying to prevent the police taking French into custody; he was sorry if he had in any way interfered wrongfully, as he merely lifted him up from the ground, and afterwards took his shirt to him; ordered to pay 10s. each, including costs. Time being asked for, they were allowed 14 days; Knibbs received a strong reprimand from the Bench, and was cautioned as to his future conduct, as he had rendered himself liable to a penalty of 20/.
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Richard is listed in the 1871 census for Oxfordshire and North Berkshire as living at Deddington with his wife Mary Jane:
Richard KNIBBS 34
Mary J. 30
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Richard appears in the 1881 census living at Market Place, Deddington, Oxfordshire, England:
Richard KNIBBS Head M Male 44 Deddington, Oxford, England Labourer In Iron Works (Manuf)
Mary J. KNIBBS Wife M Female 45 Deddington, Oxford, England Wife To Labourer
Mary TAYLOR Mother U Female 64 Deddington, Oxford, England Sewer Seamstress Pauper Outdoor

Living with them was Mary Jane's mother, Mary Taylor, 64, from Deddington.
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It is believed that Richard's first wife Mary Jane died after 1881, and that Richard then remarried to Susannah Taylor from Buckingham, Buckinghamshire, England. Richard moved to live in Buckingham and can be seen in a book called "Directories of Buckingham", he was a Confectioner in Well Street, Buckingham between 1903 and 1920.

The 1881 census clearly shows that Susannah's father was a Confectioner and also lived at Well Street, Buckingham, so I suspect that the shop was originally his, and passed down to his daughter Susannah after he died in September 1890. No record of the shop is seen after 1920 until 1931 when it is clearly run by his wife Susannah.
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Richard and Susannah appear in the 1901 census living at 2 Well Street, Buckinghamshire, England with their daughter Dora:
Richard Knibbs 64 Oxon Deddington Confectioner
Susannah Knibbs 48 Bucks Buckingham  
Dora Knibbs 8 Bucks Buckingham

Also living with them was a niece, Susannah Tew, aged 19, a Confectioners Assistant, also from Bucks Buckingham
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Richard appears in Kelly's Directory of Buckinghamshire, 1903, as a Confectioner of 2 Well Street.
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Richard appears in Kelly's Directory of Buckinghamshire, 1911 as Confectioner, Well Street, Buckingham. We also see Richard in the 1911 census living at 2 Well Street, Buckingham with his wife and daughter Dora:
Richard Knibbs Head Married M 74 Confectioner Deddington Oxon
Susaunale Knibbs Wife Married 23 F 58 Bucks Buckingham
Dora Mary Knibbs Daughter Single F 18 Assisting in the Business Bucks Buckingham
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Despite his first and second wives having the surname of TAYLOR, I haven't proved any connection between them as yet. They are clearly not sisters, but I note that each has a connection with Deddington, Oxfordshire. Mary Jane Taylor was baptised there. Susanna's father Joseph was born there. It can also be seen in 1881 that Susannah had a cousin, Jane Taylor from Deddington living with her.

The Confectioner's shop isn't visible in the book called "Directories of Buckingham" from 1939, so I suspect that it was sold when Susannah died.

Susannah can be seen in the 1881 census living at Well Street, Buckingham, Buckinghamshire with her father, sister and cousin:
Joseph TAYLOR Head W Male 59 Deddington, Oxford, England Confectioner
Susan TAYLOR Daur U Female 28 Buckingham, Buckingham, England Confectioner Assistant
Jane Elizabeth TAYLOR Daur U Female 23 Buckingham, Buckingham, England Confectioner Assistant
Jane Lock TAYLOR Niece U Female 19 Deddington, Oxford, England Dom Serv

Joseph Taylor died about September 1890 in Buckingham, Buckinghamshire, England, aged 69.

Susan died aged just one year.