I do have questions about german_roots, but i am not sure how this works

Question

I have a family history yet seeking roots for Ernest Aguest Rohlmann on the right side of the picture; he come to the US on a boat, and he had family in Hamburg Germany, I am not sure how hints work on WikiTree, but I have picture of him and his bakery truck business here in the US. https://www.wikitree.com/wiki/ROHLMANN-22

Comments

I am afraid I am not clear what you are asking. Are you able to be more specific?

Thank you for adding the photo to Ernest Rohlmann's profile.

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I would like to find more history of his family Rohlmann, the names of his grandparents possibly: this is what i have found to be his father. Yet, i am seeking pictures and more history. 

William Otto Rohlmann

B:Nov 1847 Hamburg, Germany

D:30 Oct 1919 Indianapolis, Marion County, Indiana, USA

1900 United States Federal Census

William Rohlman	52
Fred Weil	45
Lizzie Rohlman	43
Oscar Rohlman	17
Erwin Rohlman	8

Answer 1

Robin, below is the Find A Grave Memorial.  Have you looked at Family Search? You will have to register, it's free, and if his profile is there you may be able to find some more sources if they are available.                     (https://www.findagrave.com/memorial/13043552/ernest-august-rohlmann:

Comments

@ Michael thank you for your helps.

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Thanks so much Susan for the star!