Miss Marian Isaac was the daughter of Henry Isaac, and his wife the former Susan Aust. She was born in England about 1859. By searching the name of Henry Isaac in Ancestry Library Edition we find his family listed in the 1871 England Census in Ancestry's UK Census Collection. In 1871, Marian’s name was listed as Mary, and she lived in Marshfield, Gloucestershire, England. In the Immigration Records portion of Ancestry Library Edition, a passenger record is found for the Henry Isaac family. In April of 1873, Henry Isaac and his family emigrated to the United States aboard the ship the City of Washington. By 1880, the Henry Isaac family was residing in Perkins Township, Erie County, Ohio, but Marian was not listed with the family. She may have been employed outside her home. According to the 1898 Sandusky City Directory, in 1898 Marian Isaac was working as a domestic employee at 318 Washington Street. The person for whom she worked was Moses True Brown, a former professor of oratory. In December of 1889, Marian J. Isaac married George W. Shaddock, in Erie County, Ohio.
After being married only a few short years, Marian J. Issac Shaddock died following a lengthy illness on April 3, 1902. She was buried at Maple Grove Cemetery in Vermilion, Ohio. Recently I was fortunate enough to see the signature of Marian J. Isaac in her personal copy of the book SANDUSKY HOUSE-KEEPER, published in Sandusky in 1888.