Glen, I am sure that the family that you found in the census is my line. Richard had six siblings.William, 1848-1928, Was born and died in Leicestershire, England. The others came to America with their widowed mother, except for my gGrandfather, Richard John. He married Hannah Kirk in England and came to Trenton with his family two years after his mother. Thomas 1858-1873,m Cornelia McGetrick, Trenton,NJ. Charles 1868-abt 1873 drowned shortly after coming to Trenton. Sarah 1862-1917 m.James McGetrick, Trenton,NJ. Ruth Rachel 1867- 1931 m. George Purvis, Trenton,NJ. Frances 1864-1927 m. Amos Hutchinson, Trenton,NJ.
Thomas and Cornelia only had two girls, Mayme and Eva, so the Marriott line was only carried on by my grandfather.
My 98 year old aunt,who still lives in Ewing. says that there was another Marriott family up around Lambertville.
Keep in touch though.We may find a connection back in England.