Wilhelm Ferdinand "Fred" Leistico, son of Carl A. and Augusta (Masche) Leistikow, was born in April 3, 1869, in McLeod County, Minnesota.
Wilhelm married Clara Marie Hanefeld on May 1, 1899, and they had 14 children:
| Mrytle Lillian Leistico | Born May22,1900 in Dundee, MN. |
| Charles William Leistico | Born November 22, 1901 in Dundee, MN. |
| Mayme Ethel Leistico | Born July 21, 1903 in Dundee, MN. Mayme married Manning Ray Boddy on October 17, 1924, and they had one child, daughter Marjorie "Peggy" Boddy. Peggy married Melvin Paul Schroeder in 1948 and they had 5 children: Sylvia, Dean, Reed, Neil, and Paul. Peggy died March 12, 2006. After the death of Manning Boddy in 1969, Mayme remarried to Lawrence Wells Martin in 1975, who died in 1988. |
| George Henry Leistico | Born October 30, 1904 in Dundee, MN. |
| Everett Elmer Leistico | Born January 3,1906 in Dundee, MN. |
| Arthur Clarence Leistico | Born July2, 1907 in Worthington, MN. |
| Harold Raymond Leistico | Born February 24, 1909 in Worthington, MN. |
| Mildred Dorthea Leistico | Born October 15, 1911 in Worthington, MN. |
| Elsie Mabel Leistico | Born January 25, 1914 in Worthington, MN. |
| Lillian Ruth Leistico | Born February 27, 1918 in Worthington, MN. |
| Albert Edward Leistico | Born September 5 1918 in Worthington, MN. |
| Arnold E. Leistico | Born September 5, 1918 in Worthington, MN. |
| Theora Rose Leistico | Born April 19, 1920 in Worthington, MN. |
| Kenneth Robert Leistico | Born February 8, 1925 in Worthington, MN. |
Wilhem died June 30, 1937. Clara died December 21, 1959.