Frank Nicolle changed his last name to Strudwicke sometime between 1881 and 1891. The census records document his name change. 

1861: Frank Nicolle, age 11, born on the Island of Jersey about 1850, is living with his grandparents Jeffrey L Strudwicke and Elizabeth Strudwicke. Frank's parents and siblings are not living in the home with him at this time. Location: Woking, Surrey, England

14 June 1880: Frank Nicolle and Percy Alfred Nicolle dissolve their business, Nicolle Brothers, a bakery, by mutual consent. Location: Deptford, Kent, England

1881: Frank Nicolle, age 31, born on the Island of Jersey about 1850 is married to Emma who was born in Hertfordshire about 1856. They have a daughter named "Lowie" born in Greenwich, Kent, England about 1874. Frank Nicolle's occupation is listed as Master Baker Employing 1 Man. Location: Edmonton, Middlesex, England   

1891: Frank Strudwicke, age 41, born on the Island of Jersey about 1850 is married to Emma who was born in Hertford[shire] about 1856. They have a daughter named Louisa born in Greenwich [Kent, England] about 1873. Frank Strudwicke's occupation is listed as Baker. Children Montague and Percy are born in Edmonton [Middlesex, England]. Location: Lewisham, London, England

The 1881 and 1891 census records are nearly identical with the exception of the last name: identical birth year of Frank, location (the Island of Jersey), his wife Emma's name, her birth year and location, Frank's occupation (baker), first born child Louisa, also born about the same time and location. Finally, Frank and Emma Strudwicke's sons, Montague and Percy, are born in the last known residence of Frank Nicolle--Edmonton, Middlesex, England.