Another coincidence surrounds Mary Kelly

Just when I think that's it. No more coincidences, what happens? This happens.
Okay, he's Dutch but I doubt his name is Maria. It is Maryn, Martyn, or Maartyn, one time lover of Mary Kelly and Adrienus L Morgestern's brother. But look at the names in the family unit, Maria and a Jeannette.
Census 1881:

Maria A Morgestern
England and Wales Census, 1881
Name     Maria A Morgestern
Event Type     Census
Event Date     1881
Event Place     Fulham, London,Middlesex, England
Registration District     Fulham
Residence Note     Victoria Rd
Gender     Male
Age     26
Marital Status (Original)     Single
Occupation     Gas Stoker
Relationship to Head of Household     Brother
Birth Year (Estimated)     1855
Birthplace     Alphen Priel (F), The Netherlands
Page Number     46
Registration Number     RG11
Piece/Folio     74/23
Affiliate Record Type     Household
Household
   
Role
   
Gender
   
Age
   
Birthplace
Adrienus L Morgestern        Head     M     33     Alphen Priel (F), The Netherlands
Jeanette S Morgestern          Wife     F     28     Mzerbo (F), The Netherlands
Johanna C Morgestern         Daughter     F     7     Proogendael
Maria Morgestern                Daughter     F     6     Proogendael
Wilhelmin L Morgestern     Daughter     F     4     Fulham, Middlesex, England
Petronella C Morgestern     Daughter     F     3 M     Fulham, Middlesex, England
Maria A Morgestern           Brother     M     26     Alphen Priel (F), The Netherlands