Hello Gladys,
This could all be cooincidence BUT:- On the 1910 census for John and Isabella in Seattle Ward 3, King, Washington.
John Rees 40 John says he immigrated 1881 - probably 2 May 1881 on the 
HELVETIAIsabella Rees 34 
Mary A Rees 20 
James Rees 30 Brother was born 1880 - a 6 month old James was on the 
HELVETIA same date. Also a passenger record for 10 Jan 1910 which could be James coming to visit. 
Mother Mrs Anna Rees of High Street. Newbridge. MonmouthshireArvil Rees 8 Nephew. This is a nephew born in Washington - should be Orvil
This is Orvil Rees 1930 in  Seattle, King, Washington.
Orvil W Rees 29  Truckdriver.
Susan Rees 27 Born Ohio
William Rees 55 Born 1875 Wales. Widow. Naturalized 1895. Engineer.
William Rees was also on the 
HELVETIA on 2 May 1881.
Also travelling 
2 May 1881  were Anna aged 34 years. Jane aged 59 years and more children Rosanna Rees age 3 year. Isaac Rees aged 4 years. There is an Isaac Rees married to Bertha and with a son Harold in Washington 1900 that fits the bill for him.
Regards  
 