Mark Aloysius Keller, 64, Vandalia, passed away March 6, 2013.

He was born March 28, 1948, in St. Henry, to Benedict and Elizabeth Bergman Keller. In 1998, he married Joyce Fark, who survives.

Also surviving are three brothers, John (Nancy) Keller and Marinus (Laurie) Keller of Dayton, and Paul (Claudette) Keller of Vancouver Island, Canada; a sister, Mary Keller Welch of Dayton; mother-in-law, Verneda Schwabero Fark of St. Marys; two brothers-in-law, John (Estelle) Fark of Marion and Steven (Cheryl) Fark of Jackson Center; 11 nieces and nephews; and 10 great-nieces and nephews.

In addition to his parents, he was preceded in death by one sister, Evelyn, a brother-in-law, Ron Welch, and father-in-law, Vernon Fark.

He graduated in 1966 from St. Henry High School. He attended the University of Dayton and received his bachelor's degree in mechanical engineering in 1970. An employee of Rieck Mechanical Services for 45 years, he served as contract manager. He was a significant leader in his profession and was active in the following professional organizations: ASPE, ASHRAE, MCA and SMACNA. He was a longtime member of the Dayton Ski Club and enjoyed traveling and spending time with family and friends at Lake Cumberland, Ky.

Mass of Christian Burial is 11 a.m. Saturday at St. Christopher Catholic Church, Vandalia.

Calling is 5-8 p.m. Friday at Marker & Heller Funeral Home, Huber Heights Chapel, and one hour prior to Mass Saturday at the church.

Interment will be at St. Aloysius Cemetery, Carthagena, at the convenience of the family.

Memorials may be given to The Hospice of Dayton, 324 Wilmington Ave, Dayton, or United Rehabilitation Services, 4710 Old Troy Pike, Dayton.

Condolences may be left at www.legacy.com.