Mariied as Thomas Carr and Maria Rushworth

Thomas Carr can be seen in 1861 as a visitor to the home of Maria's parents. Maria (layer to be his 1st wife) was also there at the time in the name of Maria Rushworth from her 1st marriage.
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Thomas Carr can be seen in the 1881 census living with his second wife Maria (Knibbs) Carr and 5 children. They were all living at 265 Strand, London, Middlesex, England.
Thomas CARR Head M Male 67 Lynn, Norfolk, England Licensed Victualler
Maria CARR Wife M Female 35 (In Doubt As To Place) Licensed Victualler (Inn Sert)
Thomas CARR Son U Male 19 Aldgate, Middlesex, England Inn Serv
Mary Ann CARR Daur U Female 18 Aldgate, Middlesex, England Inn Serv
William O. CARR Son U Male 17 East Grinstead, Sussex, England Inn Serv
Edith E. CARR Daur U Female 2 Strand, Middlesex, England
Lionel CARR Son U Male > 1 Strand, Middlesex, England
Kate HORTON Serv U Female 21 Newington, Middlesex, England Servant (Domestic)
Eliza ENTICOTT Serv U Female 18 Axminster, Devon, England Servant (Domestic)

This Maria is Thomas' second wife. His first wife was also named Maria. She was Maria Oman, the sister of Elizabeth Oman who married Edwin George Knibbs.

Thomas' second wife Maria was in fact his niece. She was the daughter of Edwin George Knibbs and Elizabeth Oman.

The children Thomas, Mary Ann and William are Thomas' children from his first marriage to Maria Oman, so they are in fact both first cousin and step-children of Maria, his second wife above.

The following details appear inthe 1861 census, all at Public House, Little Thames Street, Whitechapel, Middlesex, England.
Name Relationship Condition Sex Age Profession Where Born
OMAN, William Head Married M 59 Dock Master Buckinghamshire
OMAN, Mary A Wife Married F 59 Bermondsey
Surrey
KNIBBS, Marion Granddaughter F 14 Scholar Mile End Bermondsey
Middlesex
MUNFORD, Ellen Granddaughter F 12 Scholar Aldgate
Middlesex
CARR, Thomas Visitor Widower M 47 Master Mariner Lynn Norfolk
DALYLEITH, Ann Servant Unmarried F 59 Cook Limehouse Middlesex
SPACKMAN, Mary A Servant Unmarried F 18 House Servant Shalford Essex
RUSHWORTH, Maria Daughter F 35 Limehouse Middlesex

I believe that William and Mary Oman are the parents of Maria Oman. We can see in the household that there is a granddaughter Marion, who I am sure is in fact Maria Knibbs, the daughter of Edwin George Knibbs and his wife Elizabeth, who was Maria's sister.

It's interesting to see Thomas Carr living in the household as a visitor and widower. We know that he eventually went on to marry two of the females from this family. He married Maria Oman who died in 1876, and then he married her niece Maria Knibbs in 1877.

I also wonder if the daughter Maria Rushworth is in fact Maria Oman? Did she previously marry someone named Rushworth before she married Thomas Carr?