Mary Plowman was the daughter of William Thomas Plowman and Susan Kauffman.

She never married.

YORK DAILY RECORD; York, York County, Pennsylvania; Saturday, August 4, 1923; Page 4:
"DEATHS AND FUNERALS
Miss Mary Plowman
Miss Mary Plowman, daughter of the late William T. and Susan Plowman, died yesterday morning at 8:30 o'clock at the State hospital, Harrisburg, from a complication of diseases. She was 68 years old. She leaves four sisters, Mrs. Charles Ziegler, 33 State street; Mrs. Frank Bittinger, West King street; Mrs. William Forscht, Dillsburg; and Mrs. Minnie Green, Brillhart; and six brothers, Jacob, East Cottage place; Edgar, Wallace street; Albert, Chestnut street; Charles, Steelton; Henry, Baltimore; and Ralph, Dillsburg. The body was removed to this city by H. Sleeger & Sons and taken to the home of Mrs. Ziegler, where services will be held Monday afternoon, leaving the house at 1 o'clock and proceeding to Mt. Zion church, where further services and interment will be held. Rev. B. D. Rojahn, pastor of the Fourth U. B. church, of which the deceased was a member, will officiate at the services."

YORK DAILY RECORD; York, York County, Pennsylvania; Tuesday, August 7, 1923; Page 4:
"Miss Mary Plowman
The funeral of Miss Mary Plowman, daughter of the late William and Susan Plowman, who died at the State hospital, Harrisburg, on Friday, was held yesterday afternoon from the home of her sister, Mrs. Charles Ziegler, 33 State street. Concluding services were held at Mt. Zion Union church, Rev. B. D. Rojahn, pastor of the Fourth United Brethren church, officiated. The following four nephews of the deceased served as pallbearers: Arthur Ziegler, Chester Ziegler, Ralph Forscht and Gordon Plowman. Burial was made in the cemetery adjoining the church."