Leonard John Rademacher was born in New Munich on September 5, 1943 to Virgil and Theresa (Zierden) Rademacher. He was raised in New Munich and spent his entire life in the central Minnesota area. Lenny married Dianne Groetsch on February 15, 1969 and together they raised four children. He worked many jobs and spent 28 years with Versa Paper Mill as a lab technician before retiring in 2009. Lenny loved to garden, especially his roses, which were a special gift when he gave them to any of his ten grandchildren. Lenny belongs to the Catholic Order of Foresters and the United Paperworkers Union. He was also a member of Seven Dolors Catholic Church in Albany.
Lenny is survived by his wife of 43 years, Dianne; his children Lisa (Ranji) Lachmansingh, Sauk Rapids; Michael (Therese) Rademacher, Askøy, Norway; Rachel (Dan) Smoot, Cottage Grove; and Heidi Rademacher, Sauk Rapids; his siblings Richard (Karen) Rademacher, New Munich; Harold (Joan) Rademacher, Greenwald; Eugene (Betty) Rademacher, Melrose; Bernice (Ron) Olmscheid, Regal; Joyce Yarke, St. Cloud; Norman Rademacher, New Munich; Chuck Rademacher (Nancy Oehrlein), Cold Spring; Debbie (Phillip) Schmeising, Paynesville; his ten grandchildren Abigail, Adan, Jaidev, William, Markus, Matias, Emmet, Nevaeh, Anika, Liam; and many family friends.
He is preceded by his parents Virgil and Theresa Rademacher; and infant child; goddaughter Trista Yarke; mother-in-law Rita Groetsch; and his grandparents.