Washburn(e)s in the ACW

I've had a little project in mind for some time to to try to fathom each individual connection between the various Civil War Washburn(e)s.
Former Vice President Hannibal Hamlin said of Patty Washburn, "Rome in all her glory never produced such a woman as the mother of the Washburns." Patty had high expectations of her children ... seven sons and three daughters includ[ing] four men who served as congressmen, two of whom also were governors. Their oldest son, Israel Washburn Jr., was elected governor of Maine in 1860.
So, they were all brothers.

Hat tip to the new small press offering, ISRAEL WASHBURN JR.: MAINE'S LITTLE-KNOWN GIANT OF THE CIVIL WAR.