I am very glad to have seen your query about the very sad family of William Burr[itt] and Antoinette M. (Everest) Parkill. I'm also glad to know about your website.
One note: Antoinette's father, my great-great-grandfather David D. Everest, was at Port Kent, Essex Co., N.Y. in 1840, on the Lake Champlain shore about three miles from Keeseville. Essex Co., N.Y. deeds from 1835 to mid-1849 confirm his location there (by late 1850, the family had moved up the road to Keeseville). The Stark, Herkimer Co., N.Y. David Everest was a different man.
Evergreen Cemetery, Keeseville, Clinton Co. side, N.Y.
DAVID D. EVEREST, Died Nov. 14, 1863 ae. 65 yrs. Asleep in Jesus. [note: he was born Addison, Vermont 28 Dec. 1799]
PERMELIA, wife of D. D. EVEREST, Died April 2, 1866 ae. 62. Mother. [Census: b. Mass.; spelled Parmelia - Pamelia - Permelia]
JOSIE [EVEREST], ae. 19 yrs., 1861. [Pointing hand, crown] [Josephine L. Everest died Keeseville 21 May 1861 ae. 19:1:18, unm., of a wasting illness - ESSEX COUNTY REPUBLICAN, 23 May 1861 - daughter of David & Parmelia, with them in 1850, 1860 census]
WILLIAM BURR PARKHILL, Died March 19, 1882, Aged 67 Years.
ANTOINETTE M. PARKHILL, Died Feb. 26, 1892. Aged 66 Years. [She is the female ae. 5-10 in father's household, 1830 census, Milton, Vermont.]
HELEN A. RICE, Died Nov. 20, 1878, Aged 46 Years. [Helen Armenia (Everest) Rice, sister of Antoinette]
Little Eugene. [EUGENE E. PARKILL] Son of W.B. & A.M. Parkill, Born Aug. 27, 1847, Died Nov. 5, 1848. [marble obelisk] [named for his mother's shortlived brother Eugene E. Everest (c1838-1840), buried Port Kent Cem.]
S[tephen] CUYLER [PARKILL], Died July 13, 1866 ae. 13 yrs.; CHARLES W. [PARKILL], Died July 13, 1866 ae. 9 yrs.; Sons of Wm. B. & A.M. Parkill. They fell asleep together and awoke in Heaven. [marble obelisk] [Drowned in Ausable River, Keeseville - ESSEX COUNTY REPUBLICAN, 16 July 1866]
HELEN E. PARKILL, daughter of W.M. & A.M. Parkill, Born Nov. 19, 1862, Died May 3, 1864. The churchyard hath an added stone and Heaven one angel more.
HENRY [Orton] [PARKILL], [son of Wm. B. & A.M. Parkill], Born Nov. 10, 1860, Died May 21, 1862. He shall gather the lambs in His arms and carry them in His bosom. [This child was named for Dr. Henry Orton Tallmadge, 1819-1917, a friend over generations of the Everests, Parkills, Rices, and Folletts of Keeseville; he signed Antoinette's death certificate, but left out her mother's maiden name]
[broken stone], son of W.M. & A.M. PARKILL. [This may be the remains of an earlier stone to one of these children; the state census of 1865 gives Antoinette as mother of 6, Parmelia (living in same household) as mother of 7. We long thought this a transposition until we found a gravestone in Milton, Vermont, unrecorded in Vermont statewide VRs, to Parmelia's first, unnamed infant (1822), which indeed brought her known total to 7.
In addition, the Parkills had another son, EDWARD ALBERT PARKILL, born on a specific date in I believe 1850, died on a specific date in I believe 1852 [or 1851-1853] - I have misplaced the second page of my transcription from the Evergreen Cemetery graves (it's in a safe place, somewhere in this house). Little EAP's marble obelisk, in the same Everest-Parkill plot as all these others, lists him as then the "only son" or "only child" of William B. and Antoinette. He was apparently named for Albert Rice, who had just married Antoinette's sister Helen Armenia Everest between mid-1850 and mid-1851.
In summary, then, William B. and Antoinette M[arie? Maria?] Parkill were married by 8 Jan. 1846 (Essex Co., N.Y. Deeds CC:173). They lived first at Essex, N.Y. (ibid.) and moved to Keeseville c.1854 (1855 Essex Co. census). Their first child, Eugene E., named for her dead little brother, was born in 1847 and died the next year. Edward Albert Parkill, their next, was born c1850, and died c1852. Stephen Cuyler Parkill was then born in 1853, at Essex (per 1850 NY State Census, which gives birthplaces within county, but was poorly filmed and VERY hard to read). He moved to Keeseville with his family c1854, and brother Charles W. Parkill [some records give middle name as Ward; listed as Charles W. W. Parkill in 1860 census, suggesting he may have been partially named for William Ward [d. 1839] of Milton, Vermont???) was born in 1857, and the household grew (briefly) with Henry Orton Parkill, born in 1860 and named for the family doctor, but who died early in 1862 while his mother was pregnant with her also short-lived only daughter. After that child's death in 1864 the only children left were S. Cuyler and Charlie, who at 13 and 9 went one suffocating July day to swim in the Ausable River that flows thought Keeseville; one was trapped in the treacherous current; the other tried to save him, but both drowned.
In the 1870 census the now-childless Parkills had in their Keeseville household Antoinette's sister Eugenia (Mrs. George Follett) and her husband and three oldest children Charles Albert, "Kyla" [Cuyler Parkill], and Will Strong Follett, shortly before the Folletts' move to Brooklyn. (My grandmother, Helen Antoinette Follett, wasn't born until 1874.) The 1880 census lists Antoinette as "Mary A." Parkill. William's will, written in 1869 and proved in 1882, is most curious in that it specifically notes that he always called his wife "Annette" or "Nett." He left her a life interest in his estate, the residue at his death to go to the survivors among his siblings: Horace, Ezra [Jr.], Belden, Cornelia Conger, Mary Ann Nicholson, and Susannah Odell (Essex Co., N.Y. Will Book, H:124).
Antoinette's younger sister Helen died in 1878; after Helen's widower Albert Rice died early in 1881, Antoinette took in his blind son, Frank Watson Rice (1852-1914) who lived with her in Keeseville until her death in Feb. 1892. Antoinette's funeral service was from St. Paul's Episcopal Church, Keeseville, to which she had belonged since its founding in the mid-19th century.