The Cuyahoga County Archives was kind enough to send me a scan of the Naturalization Record for William Hudson. William Hudson was Margaret Ellison’s second husband and the step-father of Mary Maria and Benjamin Walker Ellison and father of Annie, Emma & Elizabeth Hudson.
You will note that the record reads as follows:
William Hudson Arrived in NY September 1848
England Filed Feb 24, 1855
Cef Nat Feb (28) T??? 1857 28-534
This tells us that the Hudson’s arrived in Cleveland, Ohio by February 24, 1855. They were listed on the 1850 US Census in Wheeling, West Virginia (Virginia at that time).
Hudson’s naturalization granted citizenship also to Margaret, his wife and his children.
To read about the naturalization laws at this time go here : http://www.rootsweb.ancestry.com/~ohcuyah2/nats/tracing.html