Rebecca Prever was the second wife of John James Robinson. With his first wife, he had children both his own and one step-daughter. Below are the nine children born to Rebecca Prever and John James Robinson:

• Robert (1853–1854)

• John Lawrence Newcomb (1861–1890), wed chiefess Caroline Kapu-ai-ana-hulu Johnson (1854–1937) of Kona.

• Mary (1844–1930) wed Thomas R. Foster – Foster Botanical Garden was their homestead, bequeathed to the city of Honolulu upon her death.

• Victoria (1846–1935) wed Kentucky-born Curtis Perry Ward, who had ties to Liliʻuokalani and Hawaii's royal court. The couple bought a coconut plantation and built a 2-story home they named "Old Plantation". Following Ward's 1882 death, Victoria oversaw the plantation operations for the next half century. Composer David Nape and Ward family friend Mary Jane Montano wrote the tribute song "Old Plantation". The first known recording was by Peter Kalani in 1916, but it has since been recorded by numerous artists.

• Bathsheba (1849–1914) wed Samuel Clesson (S. C.) Allen from Boston. Known as "Aunt Batty" to her nieces and nephews, she inherited the bulk of Allen's $2,000,000 estate after his 1903 death. In widowhood, she became a philanthropist. Upon her own death in 1914, her estate was estimated at slightly under $1,000,000.

• Matilda A. (1851–1937) wed William E. Foster, the nephew of her sister Mary's husband Thomas R. Foster.

• Annie (1855–1921) wed Albert Jaeger, a German immigrant who was appointed Hawaii's commissioner of the Bureau of Forestry. He became a manager at Allen & Robinson Lumber Company.[19]

• Lucy (1858–1943) wed Dr. Albert McWayne

• M. P. Robinson wed Sophia Louisa Campbell (1851–1888) of New Jersey in 1877. After her death at age 36, he never remarried. They were the parents of three sons:

• James Lawrence Prever (1880–1947) was trustee of his father's estate, and a founder of the Hawaiian Broadcasting System. He wed Lilla May Ripley (1879–1969). The couple had no children.

• Mark Alexander (1882–1955) managed the Robinson estate. With his first wife Agnes Armour (1887–1942), he had four sons and two daughters: Mark Prever II, James Allen, Charles Armour, John Alexander, Susanna Louise and Kaikilani Kamakana. In 1945, he wed Mary Kapuahualani Hart (1896–1978). He had no children with her. She was subsequently elected to the Hawaii Territorial Senate, and founded Robinson Travel, Inc.

• Allen Campbell (1885–1926) was employed in managerial positions at Trent Trust Co., and C. Brewer & Co., and was the founder of Bergstrom Music Company. During World War I, he served as an American Red Cross Captain in England and Russia. He never married.

After a lengthy period of insomnia that drove him to the brink of insanity, Robinson killed himself on April 2, 1915. He left a note for his son explaining his actions. At the time of his death, he belonged to several fraternal organizations, including the Freemasons, Scottish Rites and the Knights Templar. His estate was estimated at $419,720.23, mostly land and other investments. A Canadian broker had been in negotiations in 1910 to put Robinson's private library on the auction block. At the time, it was said to be one of the most extensive libraries in a private collection. The deal was never completed, and the library was estimated at $57,000 at the time of his death.

The following are the children of John James Robinson and his first wife. They are a half-brother and two half-sisters to Mark P. Robinson:

• Caroline Tauwati Robinson (1815–1921) of Tahitian-Hawaiian ancestry, she was the step-daughter of John James Robinson, from his first wife's previous marriage. Known as "Wati" or "Watti", she married Robert William Holt, her step-father's business manager, and related through marriage to Liliʻuokalani's husband John Owen Dominis.

• James J. Robinson (1826–1896) lived at north Kona. His wife's name was Kekapa.

• Charlotte Robinson (1828? -1913) married Richard Coady at Washington Place in 1852. After his death, she married Dr. E. Von Hasslocher.