Marriages March qtr 1874   
 
 
Martha Ann Kimber    Bristol  6a 99    
John Osment      
Martha was the sister of James Kimber - Frederick was living with him in 1891.  Their parents were Charles & Charlotte
See 1861 ref  RG9 Piece 1649 Folio 65 Page 14
See also 1881 entry already posted above - I would hazard a guess that Martha was his mother and she then married Osment
Martha was still with parents Charles & Charlotte in 1871