| Possible Birthdate | 20 Jul 1833 | According to at least one source, his birthdate was 20 Jul 1833 birthplace was New York. |
| Birth | 24 Jul 1834 | John Preston Vosler was born on 24 Jul 1834 in Ohio. |
| Possible Birthdate | 29 Jul 1834 | According to at least one source, his birthdate was 29 Jul 1834 birthplace was New York or Pennsylvania. |
| Alternate Marriage date | 16 Feb 1856 | One source shows the marriage date to be 16 Feb 1856 in Tryonville, Crawford County, Pennsylvania. |
| Marriage | 2 Nov 1857 | He and Elizabeth Maude Sanderson, daughter of John Nelson Sanderson and Elizabeth Louisa Lewis, were married on 2 Nov 1857 in Tryonville, Crawford County, Pennsylvania. |
| 1860 Census | 5 Jun 1860 | John appeared in the 1860 Federal Census of Kingsville, Ashtabula County, Ohio, as John Vosler, with his wife, Elizabeth. Their son, George, was listed as living with them in the household of Mary Howard, white female age 60. He is a white male, age 25. His occupation is day laborer. He was born in New York. |
| 1870 Census | 1 Jul 1870 | John Preston Vosler appeared as head of household in the 1870 Federal Census of Monroe, Fremont County, Iowa, as John Vasseler. Living with him was his wife, Elizabeth, and their children, George, Dorothy, Henry and Fanny. He is a white male, age 34. His occupation is farmer. His personal estate is valued at $200. He was born in New York. He is a male citizen of the U.S. of 21 years of age and upwards. |
| 1880 Census | 9 Jun 1880 | John Preston Vosler appeared as head of household in the 1880 Federal Census of Ashland Precinct, Saunders County, Nebraska, as John Vosler. Living with him was his wife, Elizabeth, and their children, George, Dorothy, Henry, Fanny, Emma, Effie, William and John. He is a married white male, age 46. Occupation is farmer. He was born in New York. His mother and father were born in New York. |
| 1900 Census | 7 Jun 1900 | John Preston Vosler appeared as head of household in the 1900 Federal Census of Mill Precinct, Lancaster County, Nebraska, as John Vosler. Living with him was his wife, Elizabeth, and their children, John and Robert. He is a married white male, age 43. Born July 1833. Married 43 years. He was born in New York. His mother and father were born in New York. His occupation is farmer. He was unemployed 0 months. He can read, write, and speak English. He owns his home, free of mortgage. It is a farm, number 24 on the farm schedule. |
| Possible Deathdate | 11 Jan 1916 | According to at least one source, his death date was 11 Jan 1916 in Ashland, Saunders County, Nebraska. |
| Death | 15 Jan 1916 | John Preston Vosler died on 15 Jan 1916 in Ashland, Saunders County, Nebraska, at age 81.  |
| Burial | 17 Jan 1916 | He was buried on 17 Jan 1916, age 81, in Cedar Hill Cemetery, Lancaster County, Nebraska. |
John Preston Vosler 