Please answer the following question: What key details about robert b. duncan  can be extracted from the following bio?  Bio: robert blackford duncan -lrb- december 4 , 1920april 29 , 2011 -rrb- was an american politician from the state of oregon . a democrat , he served multiple terms in the oregon legislative assembly and as a u.s. congressman from oregon . in the oregon house of representatives he served as speaker for four years , and in the u.s. house he represented two different districts . the illinois native and world war ii veteran twice ran unsuccessful campaigns to be elected to the u.s. senate .
A:
- party is democratic- predecessor is pat dooley- succeeded is ron wyden john r. dellenback- birth date is 4 december 1920- death date is 29 april 2011- spouse is marijane duncan -lrb- d. 1990 -rrb- katherine boe- office is 49th speaker of the oregon house of representatives- district is 3rd 4th- term end is 1962- constituency is jackson county- name is robert b. duncan- death place is portland , oregon- birth place is normal , illinois- term is january january 3 , 1963 -- january 3 , 1967 3 , 1975 -- january 3 , 1981- successor is clarence barton- state is oregon oregon- alma mater is illinois wesleyan university , university of michigan law school- preceded is edith green edwin r. durno- term start is 1959