Born to Life on October 20, 1963 in Port Washington to Patricia and David Leinfelder. Born to Eternal Life on March 29, 2018, at the age of 54 years after suffering a brain aneurysm. Beloved husband of Cindy (nee McDaniel). Best dad ever to Sara (Brandon) Gigot, Andrew and Emily. Loving papa to Theodore Gigot. Dearest son of Patricia (Carl) Charles and the late David Leinfelder. Big brother to Mia (Geno) Dougherty, Michael (Lisa) Leinfelder, Kris (Michael) Markiewicz, Kevin (Shannon) Charles and Kari Graske. Son-in-law of Arlene and the late Everett McDaniel. Brother-in-law of James (Sherri) McDaniel. Also survived by many relatives and friends.

Jon dedicated his life to the children of Milwaukee Public Schools. He loved cheering on the Brewers, Packers and the MU basketball team.

Jon is reunited with his loved ones in Heaven but will be greatly missed by his family and many others.

Visitation Tuesday, April 3, from 4-5:45 PM at Lumen Christi Catholic Church, 2750 W. Mequon Rd., Mequon, followed by a Funeral Mass at 6 PM. In lieu of flowers, memorials to Special Olympics or Medical College of Wisconsin-Neuroscience Research would be appreciated.