Juliett A. was in the 1860 Census at Janesville, Rock Co., WI:
Mary A. Flagler 45, Joseph 21, Geo. D. 19, Sylvester 17, John 16, Ira 13, Felix 9, Juliett A. 7. All born PA except 3 youngest children b. Wisconsin. Next to E. (Edwin) Flagler 23 and Lenora 21.
This the family of Peter B. Flagler, who was there in 1850 (pg. 230): 42 farmer $1600 b. NY (with Mary and 6 ch). They were close to Silas Flagler and Peter was probably another son of John Z. Flagler (~1771-1840). John Z. moved from NY to Stroud, PA before 1820. See my other 12/28 msg. re Edwin.