An Unrecorded Deed

As an introduction:
I am a member of the Genealogical Society of Bergen County, and we are indexing the birth, death and marriage announcements in the Hackensack Republican,” one of the local papers.

While looking through the newspaper during my indexing session, I noticed the following news item in the issue of 21 February 1924 (pg. 5, col. 3) :

AN UNRECORDED DEED

When examining a title to lands in the borough of Upper Saddle River, in this county, Walter W. Weber, an attorney of Ramsey, found that a certain deed was not recorded. When he asked the owners of the property concerning this, they produced a deed from Michael Fisher and wife to Joseph Post, which was dated May 11, 1807, and never been recorded. They explained that the deed had been in the family all this time, the property having been handed down from one generation to another. Joseph Post, who received title to the property in 1807, conveyed it to his son, Henry P. Post, in 1854. Henry P. Post held the property until his death, which took place in 1895, and by the terms of his will he directed that the property be sold by his executors. The Executors sold and conveyed the property to Margaret Louisa Gildersleeve, a daughter of Henry P. Post, thereby keeping it in the family. Margaret Louisa Gildersleeve died in 1919, without leaving a will, so the property descended to her two children, Mrs. Harry Norton of Upper Saddle River, and Mrs. John Irwin of New York City, who during the latter part of 1923 divided the property, each taking one half

So you never know, where you can find genealogical information, here are four generations in a simple little news item.

Some quick online research shows the following:
Henry Pohlman Post (aged 28) is in the 1850 census in Hohokus, Bergen County, with prob. wife Margaret (aged 27), Hannah M Post ( 7), John H P Post (5) Margaret Post (3), Charles E Post (1). Find-A-Grave has a gravestone, but the birth date shows as 1881
Margaret Post Gildersleeve was born in 1846, and died in 1919. She is buried in the Saddle River Low Dutch Reformed Cemetery (see find-a-grave). She is the wife of Floyd.
Harry Norton and his wife Lulu are listed in Upper Saddle River Borough on the
1910 census with four children and his mother Jennie, sheet 2B
1920 census with four children and his mother Jennie, sheet 1B, line 71-77.