Age 52, of Houston, TX, born in Somerset and raised in Gray, after a valiant 25-year battle with cancer, died on Saturday, June 15, 2013. Husband of the late Lynn H. (Van) Leosewski; stepfather of Albert Coleman; son of Joseph and Sue Leosewski; brother of Donna (Dr. Larry) Brown, Antoinette (Joseph Hadobas) Leosewski and Bernadette (Dr. James) Burgess; uncle of Alex, Julia and James. John received his bachelor's degree from West Virginia University and his master's degree in geophysics from Purdue University. John spent his entire professional career with ExxonMobile and in 2012 was the recipient of the prestigious ExxonMobile President's Leadership Award. John loved life. What gave his life meaning were family, friends and faith. He touched many lives with his common decency, warmth and kindness. His great loves were fishing, baseball and Pittsburgh sports. John will be deeply missed by his family and friends. Family and Friends are invited to attend a Funeral Mass at St. Stanislaus Church, 57 21st Street, Pittsburgh, PA 15222 on Wednesday at 10 a.m.