Hi,I've found something in "The Merwin Family in North America" that may be of help.
Pg. 403 1349.Talcott (7) Merwin b. Oct. 18, 1796 in Claverack NY d. Apr. 13, 1850, in Lapeer Co, Mich., a son of Daniel & Sarah (Guthrie) Merwin.On Nov 1, 1825, mar. in Newfame, Niagara Co, NY, Phebe Teed b. Sept. 16, 1800, of undetermined parentage, by whom he had 6 children all b. in Niagara Co.: William D. b. Oct. 18, 1826 - slain by indians. 2615. Calvin Joseph b. Aug 10, 1829 Emily Eliza b. July 18, 1831; d. Oct 6, 1906 Josiah B. b. July 18, 1832 Sarah Caoline b. Nov. 12, 1837 Linus b. Jan 28, 1835 d. aged 6 weeks (Moved to Mich. sometime after Oct 1832)
Pg. 626: 2615.Calvin Joseph Merwin b. Aug 10, 1829, in Newfane, NY d. Nov __, 1903, a son of Talcott & Phebe (Teed) Merwin.On Dec 8, 1852, mar. Emily Eliza Beach b. Dec 3, 1831 d. Oct 1906 by whom he had at least 7 children: Alice Irene, Phebe Adelaide, Helen Estella, Ellen, (twin to Helen d. Aug 25, 1859), Talcott Edward, Mary Josephine, John Merrick.
Is this your family?I just looked at another Talcott and found that he had a son Calvin also.This one is Talcott Edward Merwin b. Sept 2, 1861 d. Sept 1, 1922 who is the son of Calvin Joseph (above).He mar. Helen Johnson b. Nov 14, 1862; d. Feb 21, 1937, of undetermined parentage, by whom he had 3 sons:Guy Edward, William Clair, Calvin Jay b. Nov 14, 1892: mar. Stella Hasburn of whom nothing further is known, and d. Sept 9, 1945
Hopefully, one of these will be who you are looking for.