Unusual surname Imison

It confused the census takers too, But I think this is your family.
1871 RG10/3691 folio 94 pge 5.
62 Church Street Runcorn.
Charles C Jonason head age 44 Pawnbroker born London.
Sarah wife age 49 born Overton.
John B son age 20 Pawnbrokers son? born Manchester.
Elizabeth dau age 18 Pawnbrokers dau?
Edwin age 16 Drapers assistant born Runcorn.
Arabella dau age 13 scholar born Runcorn.
Sarah A dau age 11 scholar born Runcorn.
Emma dau age 9 scholar born Runcorn.
Amelia dau age 5 born Runcorn.
The writing is bad, but when you know the name is Imison you can see that the transcription is wrong.
Here they are in 1861 once again the name was transcribed wrongly, but the mistake was corrected.
RG 9/2598 folio 80 pge 48.
Church Street Runcorn.
Christopher C Janton head age 34 Pawnbroker born London.
Sarah wife age 29 born Overton.
John son age 10 scholar born Manchester.
Elizabeth dau age 8 scholar born Runcorn.
Edwin son age 6 born Runcorn.
Arabella dau age 3 born Runcorn.
Sarah Ann age 1. born Runcorn.
Catherine A Mingtley vis age 20 born Westerton.