First, I doubt that Samuel Flewwelling is interred in vault 35, although I stand to be corrected and will get to that in a moment.
Second, I doubt if Samuel has any living descendants.
Third, I believe the original owner of the vault was Judson Canfield m. Mabel Ruggles.
Judge JUDSON CANFIELD b. New Milford, CT 23JAN1759, d. 5FEB1840, re-interred from a cemetery in New York City to Oak Hill Cem. Clarkstown, NY in 1855, m. 5MAR1786 New Milford, CT MABEL RUGGLES (b. 1761, d. NY 26JAN1844, re-interred from a cemetery in New York City to Oak Hill Cem. Clarkstown, NY in 1855), of Sharon, CT. Lived in Sharon, CT. (Yale, 1782: lawyer, judge and state legislator of Connecticut.)
Samuel Flewwelling m. Judge Canfield's daughter, Julia Elvira Canfield. A list, from your web site, of those believed to be interred in vault 35 is:
35 Elizabeth Bennet 4 Apr 1844
35 Hulday Taylor 22 Apr 1844 [HULDAH CANFIELD, d/o Judson Canfield, b. 12APR1766, d. 17APR1844, bur. Oak Hill Cem. Clarkstown, NY, (or Interred vault 35, Marble City Cemetery, NYC 22APR1844), m. 1782 General AUGUSTINE TAYLOR (b. d. 1844)
35 Mary Cameron 14 Jan 1847
35 William T. Noyes 29 Jan 1850
35 Charles Jackson 11 Sep 1852
35 A. Hogg 6 Jan 1856 [This probably should be Hoag, where a d/o Eliza C. (Canfield) White m. _____ Hoag. Either thsi is that daughter, and H. 'Hogg', below her husband; or vice versa.]
35 M. F. Noyes 22 Dec 1856 [probably; _____ CANFIELD m. _____ NOYES; a d/o (I think) Eliza C. Canfield m. ____ White; where Eliza was a d/o Judson Canfield. I suspect M. F. was that daughter, and that William T. Noyes, above, was her husband.]
35 E. Cameron 23 Feb 1858
35 H. Hogg 20 Apr 1860 [This probably should be Hoag, where a d/o Eliza C. (Canfield) White m. _____ Hoag.]
35 William Curtis Noyes 28 Dec 1864
35 Eliza M. Jackson 5 Oct 1882
35 Alletta B. Gale 29 Apr 1885
35 Four adults
35 Caroline E. Mackey [CAROLINE E. CANFIELD, d/o Judson Canfield, m. WILLIAM MacKAY.]
35 Mary Tallmadge [probably a d/o: ELIZABETH H. CANFIELD m. FREDERICK S. TALLMADGE; where Elizabeth was a d/o Judson Canfield.]
You will note that Huldah (Canfield) Taylor is given as bur. Oak Hill Cem. Clarkstown, NY. Unless Marbel City Cem. is the same, it is possible that some interments were temporary. There is, I understand, some question about this. Samuel Flewwelling and Julia Elvira (Canfield) Flewwelling are also said to have been bur. in Oak Hill Cem. There is a monument ther to that effect as reported by an observer:
On our drive to Nyack, NY and the Oak Hill Cemetery this past weekend, we did locate quite easily the monument for your Samuel Flewelling. Following is the main inscription:
Died June 21, 1849
Aged 74 years
Julia E. Flewwelling
Died May 21, 1868
Aged 77 years
Included in the same plot was the grave and marker of Judson/Mabel Canfield, as well as 3 other family members.
The same person also wrote:
I just received the following information from a volunteer genealogist who is computerizing data from the Oak Hill Cemetery in Nyack, NY. This data has been furnished to her obviously from the cemetery office itself. In it she lists both Judson Canfield and his wife Mabel (Ruggles) as having been moved from a NY City cemetery and interred there on 11/01/1855. For me, this helps to possibly disprove some wild tales that I've heard about numerous burials and reburials for Judson, with no mention of his wife. As for any will that Judson might have left, I never heard of any such document, which does not mean that one might have existed. Since he died in NY, I doubt that one would be probated in Ohio, for as far as any of my family knows, Judson never lived in Ohio at any time.
Now the interesting part of this info I received was the listing of the burials of both Samuel Flewelling and his wife Julia E. (Canfield) also in the Oak Hill Cemetery. Samuel's date of death is given as 6/21/1849, and Julia's given as 5/21/1868. All of these individuals are buried in the same Section and Lot.
Thus, I question whether Samuel Flewwelling is actually there. It is Elvira's will which names several of these people; and suggests that she and Samuel had no surviving children. On the other hand, I have reason to believe there are many surviving descendants of Judson Canfield, who apparently had a remarkable life.