Sr. Mary Thaddeus Markelewicz

Celebrating 60 years as a Felician Sister
Portrait of Sister Mary Thaddeus Markelewicz

Place of Birth
Pittsburgh, PA

Entered Postulancy
August 22, 1963 
Our Lady of the Sacred Heart Convent
Coraopolis, PA

Home Parish When Entered
Diocese of Pittsburgh
St. John Cantius
Sharpsburg, PA   

Current Assignment

2019 – present
Volunteer, Ministry of Presence 
St. Anne Home
Greensburg, PA                 

Past Assignments

1988 – 2019
President and CEO
McGuire Memorial
New Brighton, PA

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Serving where needed since 1874

Founded in Poland in 1855, the Felician Sisters are a congregation of women religious inspired by the spiritual ideals of their foundress, Blessed Mary Angela Truszkowska, and Saints Francis of Assisi, Clare of Assisi and Felix of Cantalice. Arriving in North America in 1874 following Blessed Mary Angela’s directive “to serve where needed,” they helped to weave the social service system. Today, the Felician Sisters founded, sponsor or support through the presence of our sisters, more than 40 ministries – all continuing to evolve to meet the needs of the people they serve.

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Provincial Offices

Provincial Information

  • Felician Sisters of North America is a 501(c)3 tax-exempt organization.
  • EIN 27-1282473
Felician Sisters of North America