Sandra Marie Mertens

Sandra Marie Mertens, 80, passed away on April 5, 2024, surrounded by her family at Villa Rosa Assisted Living. She was born on February 23, 1944 to the late Leander and Alfreda (Michels) Abler.

She attended Holy Cross Grade School in Mount Calvary and graduated from New Holstein High School.

Sandra married Kenneth Mertens, the love of her life, on September 11, 1965, at Holy Cross Catholic Church in Mount Calvary. Ken passed away on December 26, 2023.

She was employed as an administrative assistant at St. Lawrence Seminary for 32 years until retirement.

Sandra had one true joy, her grandchildren. She attended as many of their events as possible and loved to boast and tell stories about them. Sandra’s family meant everything to her.

Sandra is survived by her daughter, Jody (Bob) Heus and their children, Taylor (Josh Scott), Carson and Owen (Ashley Lisowe); daughter-in-law, Stacey Mertens and her children Logan (Brianna) and Kaine (Sydney Lavey); siblings, Kay (Bill) Seibel, Susan (Joe) Stephany, Michael (Joannie) Abler, and Mary Joan (Mark) Winkler.

She is further survived by siblings-in-law, Dyanne (Sham) Crowley, Joan (David) Nickel, and Nick (Jane) Mertens, other relatives and many friends.

In addition to her husband, Ken, Sandra was preceded in death by her son, Jamie Mertens; grandson, Robert Michael Heus; sister-in-law, Darlene Mertens; her parents; and her parents-in-law, Norman and Lyola Mertens.

Visitation: Sandra’s family invites relatives and friends for a time of visitation at Holy Cross Catholic Church, 308 Calvary Street, Mount Calvary on Saturday, April 13th from 9:30 to 12:30 PM.

Service: A Mass of Christian Burial will be celebrated at 1:00 PM at the church. Sandra will be laid to rest, next to Ken and her son, Jamie, in Holy Cross Cemetery.

In keeping with Sandra’s spirit, the family will be providing flowers, memorials may be made in Sandra’s name to Club 44 Foundation.

Online condolences can be shared at