Mark Charles Casaleggi, born in 1959, finished his earthly work on November 1, 2025, and is now wholly at peace and home with Jesus. Mark was born in NJ and grew up riding the waves at Jersey Shore beaches with his siblings (Carol Underriner, Laura Clark, Paul Casaleggi, and Lois Casaleggi-Diamond), before moving to Mt. Carmel, IL for his teenage years. He attended SIUE and worked in construction before switching to pest management where he and his wife, Sue, worked together for the remainder of his years. He treasured family, valued respect and responsibility, and enjoyed good food and good music.
Mark loved Jesus with his whole heart, mind, and strength and he served others with generosity, excellence, and humility. Mark is survived by his wife (Sue Casaleggi, nee Potthast), his daughters (Maria Casaleggi and Anna Casaleggi), and his beloved grandchildren (Kaydin and Kaleb). Visitation will be held at SouthGate Church (9820 East Watson Rd. St. Louis, MO 63126) on Friday, November 7th from 4-8pm. On Saturday, November 8th, SouthGate will open at 9am with a service to honor his life beginning at 10am. He hopes you all continue his legacy of love – do good.
So very sorry for your loss. Mark was a special man and will be greatly missed by all. You and your family will remain in our prayers. Very fitting Mark passed away on All Saints Day!! God Bless You!!
Rest in peace Mark, we will miss you dearly!
Liu and Family
Met and knew Mark from his relationship with Kutis Funeral Homes. Later enlisted Mark to do the exterminating at my home. At both he possessed a warm smile, a gift for conversation, and a professional work ethic. Blessing to his family and friends and know that he will be missed.
My heart breaks and I am so sorry for your loss
I’m sorry for you loss, he will be missed….
Oh man. He was such a peach. First time he came to our Lustron house in Marlborough he said he’d driven by for years. Was such a pleasure to have him in as he knew about Lustrons and after his excitement about the house my husband brought a mamas pride album out to show him as we started talking about music. I am leaving town on Friday and hate I have to miss his send off. Rest in peace Mark…you are already missed
Love Di
May his memory be a Blessing and Sue & family , please know that I and countless others ~are blessed to have know Mark . May he rest in peace .
Barbara Abrams
May Mark memories warm your heart when one thinks of Mark. My prayers for peace and comfort
We’re so sorry to hear of Mark’s passing. Getting to know him over 22 years of treating our house, we always thought of him as a father figure, offering helpful advice and showing interest and kindness to our family above everything else. We will miss him and wish you and your family comfort in these trying times.
The Depke’s
Sue, so sorry for your loss. You and your family are in our prayers.
I love what Barbra Abram’s said. I feel the same way. As a former high school classmate of Mark’s We would sit and talk at class reunions every 5 years and it would seem like we had never been in different parts of the country. Such a great person. Everyone was Mark’s friend whether they knew it or not.
Rest in peace Mark. You were a wonderful person and Bob and I were blessed to know you. Our prayers for comfort go to Sue and Mark’s family.
Marlene Fields
I always enjoyed talking with Mark, he was such a Godly man and always had nothing but good things to share. He will be greatly missed by many. Praying for the family.
I will miss this manly man! But I know we will see him in glory! God bless his family and peace and rest through this time of sadness!
It was my honor to work with and get to know Mark. Warm memories of a great man of Godly character bring a smile to my face. His time has come too soon.
Sue,
You and your family have our deepest sympathy. Mark was a warm and engaging man, whom you knew immediately upon meeting, you wanted him as a friend.
Sue, we are so sorry for your loss. You and your family are in our prayers.
Sue, Maria, and Anna,
We are deeply sorry to hear of Mark’s passing. He was such a kind hearted, generous man who will be greatly missed.
My warmest condolences to the entire family. Having grown up on the Jersey shore with the Casaleggi family, I have so many fond memories of shared family times, filled with laughter and fun. May peace embrace you on this journey and know that the Swanick girls will keep all of you close to our hearts and in our prayers. Love to all….
So sorry to hear of Mark’s passing. Your family will be in my prayers.
Sorry to hear about Mark’s passing. He was always friendly and caring. Family is in my thoughts and prayers
I ended up having the pleasure of knowing mark for over 20 years. I loved when he came for a service call, so we could chat and catch up. The care he took with my home was amazing. I knew he would always give good advice, pass along names of reputable businesses and where there were problems in my house I needed to fix. My heart is so sad for you Pat and your children and extended family, but my heart is so full for having known him.