Niles family plot in Woodlawn Cemetery in the Bronx, New York.
Lake View plot-61/74 lot 549

Isabel White and her husband William Watson Niles' home was in the Bronx. Their son's memorial is in Woodlawn Cemetery.
William White Niles (July 22, 1860-January 12, 1935 # 72912721) was the originator of the Bronx River Parkway.
Isabel died at her home in Bedford Park in New York City, Tues. August 9, 1910.
She does have a death certificate #4407. Her husbands detailed obituary in the October 31, 1900 New York Tribune mentions her surviving as well as 6 children. The New-Church Messenger Oct. 23, 1910 Vol. 99. has her church obituary saying seven children were born with five children surviving-Swedenborg Press pg. 253.
She married William Watson Niles on January 3, 1855.
Their first born son was Robert Lossing Niles born in 1857.
He married Anna Cornelia "Roma" Lyman January 28, 1885 in Wake, North Carolina. Anna Cornelia "Roma" Lyman Niles has a memorial in Greenmount Cemetery in Baltimore City Baltimore #92595723

1870 Census: West Farms, Westchester Township, New York
14/16
William Niles Age 50 [should be Age 48 ][b. 26 March 1822]; Lawyer; b. Vermont
Isabella [White] Age 40 [should be Age 33][b. 22 March 1837]
Robert [Robert Lossing Niles] Age 12 [b. 1858]
William [William White Niles] Age 9 [b. 1861]
Isabella Age 8 [b.1862]
Charlotte Age 5 [b.1865]
John Age 3 [b. 1867]
Jennet Age 40 born Vermont
Bridget O'Niel Age 27 Servant, Ireland
Mary Murphy Age 25 Servant, Ireland
Mike Fallon Ag 28, Ireland, Coachman
Martin McCarty Age 20, Ireland, Gardner

1880 Census: New York City, New York County, Enumeration Dist. 679
William W. Niles Age 56 [b. 1824]; Lawyer
Susan [Incorrect name-Isabela or Bella] Age 43 [b. 1837]
Robert Age 22 [Robert Lossing Niles]
William Age 19 [William White Niles]
Isabella Age 18
Susan Age 15
John Age 13
Flora Age 9
Agnes Age 24