Son of Levi Leffel and Sarah C. Russell. Halleck was listed as single and was thought to be about 75 years old at the time of his death, but an actual age is unknown. He was in the Shelby County Infirmary at the time of his death.

MO d/c 41735—As Hallic Leffle

A lad named Halleck Leffel, while riding on a hand car near town on Sunday, accidentally fell off the car, breaking his right leg. He was conveyed on a stretcher to his home and cared for.
Shelbina Democrat, Shelbina, Missouri, 14 Aug 1878, Page 1, Column 1

LOCAL.
—Halleck Leffel, son of Levi Leffel of Marion county, who has been wondering about in this county for some time, was by order of the court sent to the St. Joe insane asylum last Monday, Sheriff Martin taking him there. Mr. Leffel is about 25 years old and he was sure enough crazy.
Shelby County Herald, Shelbyville, Missouri, 04 Jul 1894, Page 4, Column 4

—It was reported last week that Halleck Leffel,, who was sent to the St. Joe insane asylum last July, was dead, but D. W. Graham received a letter Monday from the authorities at the asylum and the letter stated Mr. Leffel was in good health. His grandfather John C. Leffel, who is about 87 years old and lives near Shelbina, is also of unsound mind.
Shelby County Herald, Shelbyville, Missouri, 16 Jan 1895, Page 4, Column 3

Information on file with Shelby County Historical Society & Museum

~~~~~~~

1900 United States Federal Census
Name: Halleck Leffel
Age: 35
Birth Date: abt 1865
Birthplace: Missouri
Home in 1900: Washington, Buchanan, Missouri
Institution: State Hospital For Insane No 2
Race: White
Gender: Male
Relation to Head of House: Inmate
Marital Status: Single

1910 United States Federal Census
Name: Hallick Leffel
[Halleck Lesse]
Age in 1910: 46
Birth Year: abt 1864
Birthplace: Missouri
Home in 1910: St Joseph Ward 2, Buchanan, Missouri
Race: White
Gender: Male
Relation to Head of House: Patient [In State Hosp. #2]
Marital Status: Single

1920 United States Federal Census
Name: Hilack Leffell
Age: 60
Birth Year: abt 1860
Birthplace: Missouri
Home in 1920: Black Creek, Shelby, Missouri
Residence Date: 1920
Race: White
Gender: Male
Relation to Head of House: Inmate
Marital Status: Single
Father's Birthplace: United States of America
Mother's Birthplace: United States of Americ

1930 United States Federal Census
Name: Halick Leffle
Birth Year: abt 1865
Gender: Male
Race: White
Birthplace: Missouri
Marital Status: Single
Relation to Head of House: Inmate
Home in 1930: Black Creek, Shelby, Missouri, USA
Street address: This is the Enumeration of Shelby County Infirmary
Institution: Shelby County Infirmary Lines 1 to 42 inclusive.
Father's Birthplace: United States
Mother's Birthplace: United States