| Birth | 26 Nov 1867 | Leonard Leroy Lake was born on 26 Nov 1867 in Rogersville, Henry County, Indiana. |
1870 Census
(with Parents)
| 23 Jun 1870 | Leonard appeared in the 1870 Federal Census of Stoney Creek Township, Henry County, Indiana, as Leonard L. Lake, in the household of his parents, Martha and Julius Clinton Lake. He is a 2 year old white male. He was born in Indiana. |
1880 Census
(with Parents)
| 1880 | Leonard appeared in the 1880 Federal Census of Richland, Grant County, Indiana, as Leonard Lake, in the household of his parents, Martha and Julius Clinton Lake. He is a single white male, age 12. Son of head of household. His occupation is at home. He attended school within the year. He was born in Indiana. |
| Marriage | 24 Dec 1889 | Leonard Leroy Lake and Margaret Runyon were married on 24 Dec 1889 in Grant County, Indiana. |
| 1900 Census | 19 Jun 1900 | Leonard Leroy Lake appeared as head of household in the 1900 Federal Census of Paw Paw, Wabash County, Indiana, as Leonard Lake. Living with him was his wife, Margaret, and their children, Audrey and Helen. |
| Marriage | 23 Dec 1905 | Leonard Leroy Lake and Leota Elizabeth Dakin, daughter of Andrew Dakin and Mary Ann (Unknown), were married on 23 Dec 1905 in Grant County, Indiana. |
| Alternate Marriage date | 24 Dec 1905 | One source shows the marriage date to be 24 Dec 1905 in Grant County, Indiana. |
| 1910 Census | 21 Apr 1910 | Leonard appeared in the 1910 Federal Census of Richland, Grant County, Indiana, as L. L. Lake, with his wife, Leota. Their daughter, Martha, was listed as living with them. |
| 1920 Census | 19 Jan 1920 | Leonard Leroy Lake appeared as head of household in the 1920 Federal Census of Richland, Grant County, Indiana, as Leonard Lake. Living with him was his wife, Leota, and their children, Martha and Mary. |
| 1930 Census | 17 Apr 1930 | Leonard appeared in the 1930 Federal Census of Richland, Grant County, Indiana, as Leonard Lake, with his wife, Leota. Their daughter, Mary, was listed as living with them. |
| Death | 14 Nov 1958 | Leonard Leroy Lake died on 14 Nov 1958 in Laketon, Wabash County, Indiana, at age 90. |
| Burial | after 14 Nov 1958 | He was buried after 14 Nov 1958 in Converse Cemetery, located in Converse, Grant County, Indiana, in Plot: Section F. |
Leonard Leroy Lake