In the 1860 US Census for St Louis Ward 5, St Louis (Independent City), Missouri the family of Freeman Barnum was enumerated as follows:
Dwelling #879; Family #1030
Freeman Barnum, 27, Male, Clerk , Real property $2,000, b. Maryland
Ellen Barnum, 25, Female, b. Pennsylvania
Elizabeth Barnum, 14, Female, b. Maryland
He is Find A Grave memorial #72245839.
From The New York Herald, New York City, August 5, 1898: Freeman Barnum, sixty (s/b 64) years old, Collector of the Port of St. Louis during Mr. Cleveland's first administration, was found dead on the bed last night at No. 6 East Thirty-second street. Gas was flowing from two jets. Mr. Barnum was widely known in the West and he had a large circle of acquaintances in this city. His father was the founder of Barnum's Hotel in St. Louis. Mr. Barnum was connected for several years with the old Coleman House, and recently he had been employed in a confidential capacity in the Gerlach. He lived in a furnished room on the top floor of the house where his body was found. He arrived at the house yesterday afternoon at three o'clock, and said he had resigned from the Gerlach and had obtained a lucrative position in a wholesale commission house. He went to his room and at four o'clock, when a servant took a letter to him, he gave instruction; not to be disturbed, as he was tired. Milton F. Frantz and Alonso Sutphen, friends of the old man tried to arouse him at ten o'clock, and failing, became alarmed. They broke the door open and were nearly overcome by the gas that burst from the room. They entered the room and found the form of Mr. Barnum on the bed. An ambulance was summoned from the New York Hospital, and the surgeon said he had been dead several hours. At the Gerlach it was said that Mr. Barnum had not severed his connection with the house, but that he had taken a brief vacation because of the heat. I was informed at the boarding house that he had been despondent for several days.