[5] Other work at the site included the emplacement of stormwater sewers about 7 feet (2.1 m) belowground, and the construction of a front entrance consisting of wrought iron gates supported by several granite pillars.

[7] The first interments at Knollwood were about 300 bodies removed from the old Erie Street Cemetery in downtown Cleveland.

[5] Hiram Brott became the first contemporary person to be interred at Knollwood when he was buried there on April 27, 1910.

[6] Demand for burial space was strong enough that by 1916 25 acres (100,000 m2) of the cemetery had been cleared, landscaped, and plots laid out.

The cemetery association also sold about 33 acres (130,000 m2) of land, and spent $25,000 ($700,000 in 2023 dollars) constructing a caretaker's residence (which included a small chapel) and maintenance buildings.

This included the sale of 100 acres (400,000 m2) of land to the new Acacia Park Cemetery, adjacent to Knollwood.

[15][c] To decorate the mausoleum, the cemetery commissioned a number of large stained glass windows from Tiffany & Co., most of which were vaguely secular in nature.

While digging the Carney grave, cemetery workers discovered that it was already occupied by a wooden burial vault containing Mallison's coffin.

In March 1983, a Cleveland television station broadcast news about the mishandling of remains at the cemetery.

After an investigation revealed the remains were Mallinson's, Carney's children sued the cemetery and were awarded $56,000.

Even after the error was discovered, Knollwood remained unsure as to who was buried in the wrong grave.

[26] In 2002, Knollwood Cemetery sought permission from the city of Mayfield Heights to permit the drilling and operation of a natural gas well on its property by Bass Energy.

The conflict led to the introduction of legislation in the Ohio Legislature to strip localities and counties of their authority to regulate oil and gas wells.

Subsequently, three natural gas wells were drilled and began operation on the Knollwood property.

As the lawsuit progressed, a Court of Common Pleas allowed production to continue at existing wells at the Knollwood Cemetery.