Dennis J. "Denny" Calalsrase a.k.a. Peter Scott Richardson, age 51, of Chicago, Illinois passed away October 10, 2020. Beloved son of the late E. Alan Richardson and the late Mildred "Millie" Richardson, nee Dill. Loving brother of Mark (Barbara) Richardson, Brian Richardson, Jim Richardson, and Ann (Joseph) Piscitello. Dear uncle to many. Visitation will be held Saturday, October 17, from 9:30-10:30 AM at G.L. Hills Funeral Home, 745 Graceland Avenue, Des Plaines, Illinois. Social distancing measures will be in place, only 40 people maximum will be allowed in the building and masks will be required. Graveside service to follow at All Saints Cemetery, Des Plaines, Illinois. In lieu of flowers, memorials to the Brain & Behavior Research Foundation, 747 Third Avenue, 33rd Floor, New York, NY 10017, https://donate.bbrfoundation.org/civicrm/contribute/transact?reset=1&id=1, would be appreciated. Funeral care provided by G.L. Hills Funeral Home. For information, please call 847-699-9003.