After Abimelech there arose to save Israel Tola the son of Puah, the son of Dodo, a man of Issachar; and he lived in Shamir in the hill-country of Ephraim.
It is somewhat unusual to find the names of BOTH the father and the grandfather in this type of account, and here it might be due to the fact that Dodo was one of David's "mighty men" (2Sam.  23:9,24,1 Chronicles 11:12,27:7).  Also, if the reference here is to one of David's mighty men, it would indicate a long skip in the genealogy between Dodo and Puah, as is customary in Biblical genealogies.