Info Info Mary C. Klettner Mary C. Klettner, Tuesday, July 27, 2021. Jowett Funeral Home - Port Huron, MI and New Haven, MI Mary C. Klettner Tuesday, July 27, 2021Mary C. Klettner, age 89, of Port Huron Township passed away on July 27, 2021. She was born on August 23, 1931 in P… Read More at Jowett Funeral Home — Port Huron and New Haven Tweet Tweet