This may be more information than you needed, but I was curious to see how they descended in the Delano and Mann lines since I'm also a descendant of both families.
Julia A. Delano, b. Randolph on 20 April 1861, dau. of Emery and Nancy A. Emery was a bootmaker, b. Randolph, and Nancy A. was b. Canton (MA).
MA State Dept. of Health births, 1861, vol. 142 pg. 296
Moses F. Mann, b. Randolph 12 April 1859, son of Seth and Eliza. Seth was a farmer, b. Randolph, Eliza was b. Braintree (MA).
vol. 124, p. 256
Seth Mann m. Minera? A. Tower, 18 Oct. 1849, Randolph. Seth was a machinist living in Boston, age 29, son of Elisha and Ruth. "Minera" was living in Randolph, age 19, b. Randolph, dau. of Isaac and Minera. It was his second marriage, her first. Married by Thomas Grier?, clergyman.
vol. 38, pg. 152
I looked at the Familysearch site, and you can find these people there, and the Mann ancestry.
You can find Julia in that database also. It also has her birthdate, parents and Delano grandparents. I confirmed in the MA Health Dept. records that her mother was Nancy A. Madan, b. Stoughton, whose parents were Lot and Nancy B. It says Emery, Jr. was b. Canton. Her grandfather was Emery Delano, Sr.
This was likely Emery Delano d. in Leicester, MA, 16 June 1886, age 80, b. Randolph, d. of paralysis, retired, no parents given.
vol. 375, p. 414
his wife Eunice d. 23 July 1882, 72 years, 4 mos., 15 days, Leicester, cancer, b. Randolph, dau. of Joseph and Eunice (Warren), he was b. Randolph, she was b. Bridgewater.
vol. 339, pg. 394
Her ancestry is at Familysearch.