Throughout his life, Coulby returned to Claypole many times.
He had several brothers and sisters living there, and as his income rose he began to make significant donations to local schools, churches, and social institutions there.

In 1887, Coulby married Jane Eliza Cottier of the Isle of Man.
Their marriage ended in divorce about 1909 or 1910.
She died on September 13, 1924, in Cleveland, and used much of the divorce settlement to build a $35,000 mausoleum for herself at the city's Lake View Cemetery.

On March 4, 1911, Coulby married May Allen Scott.
She had married Dr. Xenophon C. Scott in 1892, and the couple had a son, Kenneth.
But the marriage ended in divorce (and he died in 1909).

In July 1911, Coulby began construction of a luxurious residence at 28730 Ridge Road in Wickliffe, Ohio.
The well-known local architect Frederic William Striebinger designed the Renaissance Revival structure, which sat on 54 acres (220,000 m²) of land and was built by Wm.
T. Paul's Sons.
The $1 million, 16-room, two-story mansion had seven fireplaces (with mantels carved from Italian marble), and a skylight over the entrance designed by Louis Comfort Tiffany.
The exterior was covered in an unusual terra cotta imported from Italy and glazed bright white.
High Palladian windows admitted extensive natural light to every room on the ground floor.
The estate contained formal gardens, a pond, a cow barn, a park, and a gatehouse (now the Wickliffe Police headquarters).
Coulby kept the trees on the north side of his property trimmed down so he could see ships sailing on Lake Erie from the master bedroom on the second floor.
Finished in 1912, the mansion, called Coulallenby (a portmanteau of "Coulby" and "Allen"), is considered a superb example of early 20th century Renaissance Revival architecture, and is listed in the National Register of Historic Places.

May Allen Coulby died November 11, 1921, and was buried in Lake View Cemetery.
Throughout his life, Coulby returned to Claypole many times. He had several brothers and sisters living there, and as his income rose he began to make significant donations to local schools, churches, and social institutions there.
In 1887, Coulby married Jane Eliza Cottier of the Isle of Man. Their marriage ended in divorce about 1909 or 1910. She died on September 13, 1924, in Cleveland, and used much of the divorce settlement to build a $35,000 mausoleum for herself at the city's Lake View Cemetery.
On March 4, 1911, Coulby married May Allen Scott. She had married Dr. Xenophon C. Scott in 1892, and the couple had a son, Kenneth. But the marriage ended in divorce (and he died in 1909).
In July 1911, Coulby began construction of a luxurious residence at 28730 Ridge Road in Wickliffe, Ohio. The well-known local architect Frederic William Striebinger designed the Renaissance Revival structure, which sat on 54 acres (220,000 m²) of land and was built by Wm. T. Paul's Sons. The $1 million, 16-room, two-story mansion had seven fireplaces (with mantels carved from Italian marble), and a skylight over the entrance designed by Louis Comfort Tiffany. The exterior was covered in an unusual terra cotta imported from Italy and glazed bright white. High Palladian windows admitted extensive natural light to every room on the ground floor. The estate contained formal gardens, a pond, a cow barn, a park, and a gatehouse (now the Wickliffe Police headquarters). Coulby kept the trees on the north side of his property trimmed down so he could see ships sailing on Lake Erie from the master bedroom on the second floor. Finished in 1912, the mansion, called Coulallenby (a portmanteau of "Coulby" and "Allen"), is considered a superb example of early 20th century Renaissance Revival architecture, and is listed in the National Register of Historic Places.
May Allen Coulby died November 11, 1921, and was buried in Lake View Cemetery.
Harry Coulby