Anderson, Oliver - Master Mariner - Origin in Sweden ?

[Julie Dobson]

I am trying to trace records of my great, great,great grandfather Oliver Anderson.  
He is named as father, Master Mariner,  on my great, great grandfather - Edward Anderson's marriage certificate. Edward signs his name as Andersson.  
 
I have a record from Find My Past of an O Anderson born about 1807 Göteborg, Sweden onboard the Marea (Maria) of London on 5th July 1835 - 2 years before Edward's birth. I have several possible records for Edward including British census records living in Sunderland,Durham, England, crew lists, England Alien Arrivals and passenger lists.  
 
- In census records his place of birth is listed as Gothenburg (Göteborg) British Subject.  
- There is a record of an Eduard Andersson aged 17 years arriving at the port of Hull from Göteborg on 31st July 1854 aged 17 - ship- Oscar.  
- A Bremen Germany Ships Crew List 10th November 1859 aged 22 years - Edward Andersson. Port of departure Bremen - destination New Orleans - Ship Elizabeth.  
- 1861 census on board vessel - Pearl as A.B Seaman. States place of birth Heligoland British Subject.  
- A German Sailors Registry Edward Andersson born 1837 Gothenburg. Residence Nygreen? Have been unable to find out location of Nygreen.  
- Passenger list (E. Andersson) 1869 from St. Pauls to Hull onboard the ship Plato.  
- 1891 census - on port Fullwell, Monkwearmouth, Sunderland on board Mytilene S/sScrew Steamer aged 52- occupation Ship Steward - Crew Roatchman. Place of birth Gathew Beng Natuesliaed, Sweden.  
- 1911 census, 5 years before his death in 1915 - at sea on Mary Elizabeth. Port of departure Chester. Official vessel number 76551. There are several Oliver Andersons living in Sunderland during that time.  
  I believe it to be a family name. For example Oliver Anderson Born 1830/1833? Gothenburg who I believe may be Oliver's son and Edward's brother and Oliver Anderson born 1850 Gothenburg who I believe was Oliver's grandson. They were all Master Mariners.  
 
Edward's son Charles - my Great grandfather was also a Seaman.  
 
I would be grateful for any help or advice to gain more information.

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