<Li> Henry Mitchell (Herbert Anderson)--father to Dennis and Alice's husband (144 episodes, 1959--1963). </Li> <Li> Alice Mitchell (Gloria Henry)--Henry Mitchell's wife and Dennis's mother (145 episodes, (1959--1963). </Li> <Li> Mr. George Wilson (Joseph Kearns)--the Mitchells' neighbor, often exasperated with Dennis's antics, though is proud that Dennis considers him his best friend . George has a dog named Fremont . Kearns appeared in 101 episodes from 1959 to 1962; his last work was aired posthumously in the episode "The Man Next Door" on May 6, 1962 . </Li> <Li> Mrs. Martha Wilson (Sylvia Field)--George Wilson's wife, a loving, grandmotherly - type neighbor who enjoys Dennis's company . The Wilsons had no children . Martha Wilson was written out of the series after Joseph Kearns' death (90 episodes, 1959--62). </Li>

Who was the first mr wilson on dennis the menace