Mary A. Ott Brennan, age 86, passed away at home on Sunday, September 12, 2021. Mary was born on October 29, 1934 in Rochester to the late George & Margaret (Tobin) Hibbard. Mary enjoyed a long, distinguished career as an RN; she loved people, dogs, traveling and shopping. In addition to her parents, Mary is predeceased by her son, Gregory Ott and her sister, Theresa Hibbard. Mary is survived and will be sorely missed by her children & grandchildren: Sally Thomas and children Matthew & Cory (Jenille); Michael (Martha) Ott and children Jamie (Travis) Garner, Kelly & Morgan; Mark (Karen) Ott and children Chad (Laura) & Kayla; Ellen (Kevin) Wentworth and children Christa, Lauren, Kevin, & Ethan; Amy (Dean) DeGraff and daughter Rachel; great-grandchildren: Whitney, Colin, Ella, Jack, Oliver, & Gemma. Funeral and burial services will be held privately. Mary will be buried in St. Patrick's Cemetery, Victor NY. In lieu of flowers, please consider making a memorial contribution to the Golisano Children's Hospital, 601 Elmwood Ave, Rochester, NY 14642 or St. Jude's Research Hospital for Children, 501 St. Jude Place, Memphis TN 38105.