On June 9, 1852, Isham was married to Julia Burhans (1827–1907), the daughter of Rebecca (née Wickes) Burhans and Col. Benjamin Peck Burnhans of
Warrensburg, New York. Together, William and Julia were the parents of: •
Charles Bradford Isham (1853–1919), who married
Mary Todd "Mamie" Lincoln (1869–1938) in 1891. Mamie was the eldest daughter of
Robert Todd Lincoln, and the granddaughter of President
Abraham Lincoln and, her namesake,
Mary Todd Lincoln. •
Samuel Isham (1855–1914), an artist. • William Burhans Isham (1857–1929), He married Hannah Collins (1860–1948), daughter of Richard Smith Collins, and left his residence and one million dollars to
Princeton University. • Porter Isham (1863–) • Julia Isham (1866–1939), who married historian
Henry Osborn Taylor (1856–1941) and gave generously to
Harvard and
Smith Colleges. • Flora Isham (1873–1934), who married Minturn Post Collins (1870–1957), also a child of Richard Smith Collins, and owned an estate, Islecote, in
Bar Harbor, Maine. After her death, Minturn, then 72, remarried Edith Buckingham, who was 23 years-old, in 1943. Isham died at the age of 81, at his home at 5
East 61st Street in Manhattan, on March 23, 1909.
Descendants Through his son Charles, he was the grandfather of Abraham Lincoln "Linc" Isham (1892–1971), who married Leahalma Correa (1892–1960), the daughter of
Spaniard, Carlos Correa and
Englishwoman, Mary Gooding, in August 1919. They did not have any children together and Linc was among the last living direct descendants of President Lincoln. Through his daughter Flora, ==References==