Mark E. Kosmowski, Jr. passed away April 26, 2021 at the age of 43. Loving son of Elaine Guinther (nee Fitzgerald). Beloved brother of Sandra Lewis (Anthony). Loving uncle to Bobby and Sierra. Relatives and friends are invited to gather Friday, April 30, 2021, at Burns Funeral Home (9708 Frankford Ave., Phila PA 19114) from 12PM-1PM followed by his memorial service at 1PM. Interment Private.