back again with a possible breakthrough!!
1881 RG11; Piece: 1484; Folio: 66; Page: 7
Chackmore, Radclive, Buckinghamshire
Marjarim Berry servant 16 yrs b Oxon Ratley
in the home of Perridge Salmons farmer and family.
It does look like Marjarim but was perhaps written down as Mary Ann and then transcribed as Marjarim by enumerator??