Sister Claire O’Neill, C.I.J., a member of the Congregation of the Infant Jesus (Nursing Sisters of the Sick Poor), Rockville Centre, L.I., for 57 years, died Dec. 27 at the congregation’s infirmary, Villa St. Joseph, Rockville Centre.

She entered the congregation in 1957 and received the religious name Sister Mary Martinus. She made her final vows in 1962.

She lived at the Motherhouse in Brooklyn; St. Anthony’s Convent, East Meadow, L.I., and then went into nurses’ training at St. John’s Hospital, Queens, to become a registered nurse.

She served as an assistant infirmarian, 1964-65, and then as assistant mistress of novices, 1965-68. She worked in the congregation’s home care ministry, Nursing Sisters Home Visiting Service. She was a staff nurse, supervisor and a home care coordinator at Mercy Medical Center, Rockville Centre.

She was elected and served eight years as a councilor and executive secretary for the order. She became a resident of the community’s infirmary in 2010 when her health began to fail.

Burial was at Holy Rood Cemetery, Westbury, L.I.