Robert M. Sierko, of Center City Philadelphia, passed away peacefully on September 12th, 2018, at the age 74. Beloved husband of Patricia (nee Casey). Loving father of Kathleen Smith (James), Michael Sierko (Amee) and Susan Collins (Timothy). Devoted grandfather of Emma, Owen, Brendan, Ian, Sarah, Ivan and Nora. Predeceased by his parents Theresa and Joseph Sierko as well as his brother Joseph and Albert Sierko. Survived by many loving nieces, nephews and in-laws. Family and friends are invited to attend his viewing on Sunday evening September 16th from 6:30-8:30PM at St. Albert the Great RC Church 212 Welsh Rd. Huntingdon Valley PA 19006. There will be an additional viewing on Monday morning in church from 9:30AM to 10:30 AM. Funeral Mass to follow at 10:30AM Burial will be in Resurrection Cemetery. In lieu of flowers please make donations in Robert’s memory to either Penn Wissahickon Hospice at Rittenhouse 1800 Lombard St. Phila., PA 19103 (6th floor) Click Here to Donate or Cathedral Basilica of S.S. Peter & Paul 1723 Race St. Phila., PA 19103.