I have yet to look up real estate transactions concerning Elihu, but it seems that he sold his property to son Elihu Jr prior to 1847. Elihu Jr, in his will, wrote that his father had the right to live in his Kittery home, as would sister Olive Locke, so long as she took care of their father. Junior had already moved to Portsmouth, NH by this time, and had owned a house on Bow St.
In York County Probate, widow Margaret Fernald filed Elihu Jr's will, and an appraisal of his Kittery property was taken in 1856 (submitted in Nov). It contained:
"a certain lot of field and pasture land, with dwelling house and barn thereon containing about 34 acres, situated on the main road leading from Traips Corner to Kittery Point Bridge, known as homestead of Elihu Fernald, dec'd."
Below is the 1850 census, showing Elihu (Sr) living with his daughter Olive and her family.
ELIHU FERNALD (Jonathan, Ebenezer, William, Renald) was born on 3 Oct 1763, likely in Kittery [Kittery VR, pg 164], the son of Jonathan and Sarah (Weeks) Fernald. He died on 4 Dec 1851, in Kittery. He married on 18 Jan 1787 in Kittery, Maine [Kittery VR, pg 172] to HANNAH CHANDLER, the daughter of Thomas and Jane (Marr) Chandler. She was born 23 Sept 1765 and died on 20 Sept 1836.
The following list of children, from "Old Kittery and Her Families", pg 395. Not sure yet of the original source of these birth dates, as they are not found in Kittery vital records.
i. JAMES BROWN FERNALD, b. 11 July 1787; d. 25 May 1822. Marr Ann Card, moved to Portsmouth, NH.
ii. MARY FERNALD, b. 9 May 1789; d. 10 July 1789
iii. MARY FERNALD, b. 9 Jul 1791. Marr Robert Newson
iv. HANNAH C FERNALD, b. 14 June 1793.Marr William Parker of Saugus, MA.
v. ELIZABETH FERNALD, b. 16 Sep 1796. Marr John Alden Of Boston, MA.
vi. BENJAMIN CHANDLER FERNALD, b. 1 Jun 1798; d. 11 Sept 1878. Marr Lavinia L Fernald. Lived Portsmouth
vii. SARAH FERNALD, b. 23 Mar 1800. Marr Thomas Jones of Portsmouth, NH
viii. ELIHU FERNALD, Jr., b. 6 May 1802; d. 24 Aug 1847. Marr Margaret T Holbrook. Lived in Portsmouth, NH
ix. JANE C FERNALD, b. 9 May 1804; d. 16 June 1882. Marr ELIHU D BROWN on 17 May 1838.
x. PAMELIA FERNALD, b. 14 Oct 1806. Marr Samuel Parker of Saugus, MA
xi. OLIVE C FERNALD, b. 30 Jan 1808; d. 30 Nov 1874. Marr William B A Locke.
xii. THOMAS FERNALD, b. 28 Oct 1809; lost at sea ca 1829
xiii. MARTHA FERNALD , b. 18 Jan 1811; d. 10 Sep 1814