Lewis was born in Wales on July 2, 1869, and was taken to Iowa when young. He became a U.S. citizen in 1890, two years after moving to California. He was at various times a deputy sheriff, a paving contractor and a realty dealer. He and Mary Powell, the daughter of Major E.B. Powell, were married in the Powell home at 2041 East Sixth Street on December 7, 1904, and eventually moved into a house at 268 E. 50th Street near South Park. They had one son, Evan Weldon, who became a deputy district attorney. He died on while in office on May 5, 1941. A funeral service was held at the Welsh Presbyterian Church, and the body lay in state beneath the rotunda of the new City Hall. Interment followed at Inglewood Park Cemetery.
Lewis was once labeled the "official roarer for the Council. He is fearless in his outbursts, and his thundering attacks upon shady deals that he discovers lurking about the City Hall are classics in the art of strenuous oratory. Brother councilmen who trail with Lewis generally look upon him as a sort of watchdog to raise the alarm upon the approach of a dubious proposition.... He fights for what he believes is right until he is the last man on the firing line, and then battles single-handed." 1930 He was among six council members who in May 1930 unsuccessfully opposed allocating funds to make a study of leveling Bunker Hill, "which stands as a hindrance to traffic and a bar to development in the northwestern downtown territory." 1931 Lewis forced the postponement of a city law that would have allowed smoking in the balconies of theaters. He opined that "We should look into the ventilation feature of this ordinance. Smokers might run everybody else out of the theater. Holes will be burned in clothing, it will increase the fire risk." 1931 He proposed a resolution by which employees of city, county, state and federal governments would contribute a percentage of their salaries to go toward "unemployment relief." Then he added private businesses as well. His idea was referred to a committee. 1931 Lewis voted twice in favor of having the city attorney appeal a judge's decision ordering the city to stop the practice of segregating its swimming pools by race. An appeal would have delayed or halted the desegregation of the pools. 1932 When Council Member George W.C. Baker asked for an ordinance to require inspection and certification of raw-milk dairies, Lewis opposed the idea, asserting it was simply a scheme to raise the price of milk. 1933 Lewis was a vocal dissenter when the council passed an ordinance fixing a quarterly fee of $37.50 "per chair or space" in tango parlors. He said the action "legalizes open gambling." 1934 He proposed doing away with most city commissions, which in that year numbered 19, with 105 members. He wanted "all municipal departments and divisions under the jurisdiction of the City Council," and he urged a reduction in the size of the 15-member council, with members "nominated by the voters in the district but elected by the voters at large." 1934 Lewis attacked "beer parlors" which had painted their windows, claiming that "such an effort at concealment shows that something wrong is going on inside. "Minors couldn't enter a saloon in the old days," he said, "and you never saw a woman standing at the bar. Today you see many women at the bar." 1936 He charged that a weekly payoff of $8,750 in protection money was being given to officials by operators of "Chinese lotteries" to allow them to remain open. 1936 He again ripped into "games of skill and science" that were to be allowed in the Venice amusement zone. claiming that allowing them there was "nothing but a bold attempt to legalize gambling throughout the entire city." 1936 He opposed a resolution aimed at stronger regulation of the Los Angeles street railway company, claiming that the yellow cars had "the best service in the world." 1936 He urged that the city should employ only people who had been residents for a year and who were registered voters. 1940 He loudly berated city health officerGeorge Parrish for his plan to require food markets to "ratproof" their premises. Parrish said there were about 1.5 million rats in the city and each ate about $1.67 worth of food. His department caught 50,000 in 1939, Parrish said.