This is what Samuel Hart Hamilton the brother of  Elijah Hamilton writes about him and about Jonathan the dad  in his Hamilton Genealogy in 1892.

My father's family was related to Jonathan Hamilton born in Harmony, Maine July 15, 1801 and died Agusut 18, 1855 at the Aldrich Hotel, Aldrich, Minnesota and lies buried on the farm of a Mr. Armstrong, about 1/2 mile from the station.  (then there is a notation 'his remains were taken up in 1897 and re-buried in a family cemetery on the old S.H. Hamilton homestead in Germania Township, Todd Co, MN.)

The Samuel H. Hamilton journal reports his father “died August 18, 1885 at the Aldrich Hotel, Aldrich, Minnesota and lied buried on the farm of a Mr. Armstrong, about 1/2 mile from the station.”   His remains were removed in 1897 to the Hamilton Cemetery site.

From Saturday, 29 August 1885 newspaper: Jos. N. Hamilton went to Aldrich to attend the funeral of his father, Jonathan Hamilton, who died last Wednesday.  He reports that farmers are still cutting their grain in that section, and that corn is not so promising as with us.  The latter crop was badly set back by a frost in June.

Mrs. Sarah Hamilton died on 23 February 1885.
Elder Jonathan Hamilton died on 19 August 1885.

http://contentdm.lib.byu.edu/cdm4/document.php?CISOROOT=%2FFH19&CISOPTR=3456&REC=10&CISOBOX=Jonathan+Hamilton

Genealogy of the Clark family of America : descended from Major Stephen Clark of Kittery, Maine

http://contentdm.lib.byu.edu/cdm4/document.php?CISOROOT=%2FFH19&CISOPTR=3456&REC=10&CISOBOX=John+Clark

From journal of Samuel Hart Hamilton:
Sarah Clark his wife was born in Epping, NH Jan 1, 1802.  She died at my brother J. N.'s (Jonathan Noble Hamilton) house Feb 29, 1885.  They were married in Ripley, now Cambridge, Maine in 1820 by Justice of the Peace.  Their children were Simeon who died an infant.  Elijah born Feb 4, 1823 died Dec. 25, 1888 in Exeter, Maine.  His first wife Catherine Lingley died in the 1840s--they had 2 children, Sarah A. and Catherine L. both born in Orsville, Maine.  Sarah married Josiah Thompson of Lee, NH in the 1860's and died in Minneapolis, MN in 1874 of diphtheria.  They left 2 children, Kate and Ella.  Elijah's second wife was Irene Langly.

From Saturday, 21 February 1885 newspaper: Mrs. Hamilton, mother of Dr. J. R., Joseph N., and Samuel has been very ill with pneumonia.  A telegram to Minneapolis brought the doctor up, who spent a few days at Joseph’s and left for the city when the old lady’s symptoms assumed a favorable turn.  The Doctor reports a bad condition of health for himself, this winter, and his general appearance is not so robust as when he was on the Hamilton farm.  He was posed with the question as to the damage of cutting the grove west of the old home, and answered that $2000 would be a small compensation for its loss. The Doctor’s judgement ought to be good, for he saw a cyclone sweep everything outside of the shelter the grove afforded.

From Saturday, 28 February 1885 newspaper: Kingston News, February 25. 
(1) Morning stage from Dassel brought Dr. J. R. Hamilton and wife, of Minneapolis, today, to attend his mother’s funeral. 
(2) Mrs. Hamilton, wife of Rev. Jonathan, died, Monday night.  The Doctor and relatives have been informed by telegraph.  She was nearly 80 years old; but your correspondent has not the particulars.

The Samuel H. Hamilton journal reports “that Mother had died at 8pm last Monday at his [brother Joseph Noble Hamilton’s] house in French Lake Township, Wright Co. Minnesota. Her age at death 83 years. She has been insane for almost 8 years.”

Genealogy of the Clark family of America : descended from Major Stephen Clark of Kittery, Maine

http://contentdm.lib.byu.edu/cdm4/document.php?CISOROOT=%2FFH19&CISOPTR=3456&REC=10&CISOBOX=Jonathan+Hamilton

1812 by 1880 census and by family journal records of William Lewis Phinney

Genealogy of the Clark family of America : descended from Major Stephen Clark of Kittery, Maine

http://contentdm.lib.byu.edu/cdm4/document.php?CISOROOT=%2FFH19&CISOPTR=3456&REC=10&CISOBOX=Jonathan+Hamilton

Cambridge, Maine by by family journal records of William Lewis Phinney