Mark Eric Petersen was born December 3, 1970, in Pierre, SD, the youngest of three children to Leonard and Marijean (Brown) Petersen.  He attended Washington Elementary School, Pierre Junior High and graduated  in 1989 from T. F. Riggs High School in Pierre.  He attended SDSU in Brookings, graduating from the College of Pharmacy in 1994.  After graduation, Mark began to work for Casey Drug in Chamberlain and Kennebec.  He later accepted the position as manager of the Walmart Pharmacy in Pierre.  He was currently a Pharmacy Consultant for the State of South Dakota, and also provided pharmacy services for the Faulkton Area Memorial Hospital.

Mark married Amy Beth Hyde on August 27, 1999, in Pierre, SD.  From this union two children were born:  Garrett Richard, 5 1/2 and Griffin Mark, 4.  They lived in Pierre until moving to Amy's hometown of Onida in 2004.

Mark was a lifelong hunter and fisherman, avid golfer and athlete.  He enjoyed snowmobiling and four-wheeling with his family and friends.  He was very interested in and excited about the pheasant hunting operation that he and his father-in-law were developing.  He attended the First Presbyterian Church in Onida.  He loved to spend time with his two sons, watching tee ball and soccer games.

Mark was always known for being a genuinely nice person and was very much loved by all his family and friends.

Mark Eric Petersen, 36, Onida, died Sunday, August 5, 2007, as a result of an automobile accident.

Mark is survived by his wife, Amy, his two sons Garrett and Griffin; his parents Leonard and Marijean Petersen of Pierre; sister Lana (Rob) Laurenz of Pierre; brother Scott (Cheryl) Petersen of Vacaville, CA; maternal grandmother Ethel Brown of Miller; nieces and nephews Ericka and Adam Deneke of Pierre, and Cata, Taylor, and Matthew Petersen of Vacaville, CA; father and mother-in-law Richard and Cheryl Hyde of Onida; and sister-in-law Bobbie Jo Farlee of Isabel, SD.

Mark was preceded in death by his maternal grandfather, Fred Brown, and paternal grandparents, Gus and Dureene Petersen.