I am researching Argents in a similar area and time. My great grandfather, Frederick George, was born in Bethnal Green in 1858. He married Hannah [Annie] b. Shoreditch. I think there is a possibilty that they could have been siblings. I intend to check the 1861 census for information as to his siblings, and parents' birthplaces. His parents were Joseph Frederick and Elizabeth [nee Crutchley]. At the time of the 1881 census, Fred and Hannah lived in Arlington St, Islington. I don't know what your knowledge of London is like but these places are all very close. I will let you know the outcome.