Manuel Requena

At one point, Requena, who was accorded the honorific Don, was appointed an election judge, but he declined, citing ill health.

The ayuntamiento was about to accept it when some one reported that Don Manuel was engaged in pruning his vineyard, whereupon a committee of investigation was appointed, with Juan Temple, merchant, as medical expert. The committee and the improvised doctor examined Don Manuel, and reported that his indisposition did not prevent him from pruning, but would incapacitate him from serving as a judge of the election.[1]

Requena was first alcalde, which was equivalent to the position of mayor, during the last years of Los Angeles under Mexican rule.

In April 1836 a force of vigilantes demanded that he cooperate with them in turning over the key to a house where fugitive Maria del Rosario Villa, accused of murdering her husband, was staying.[1] He replied, in Spanish,

Maria del Rosario Villa is incarcerated at a private dwelling, whose owner has the key, with instructions not to deliver the same to any one. The prisoner is left there at the disposition of the law only. God and liberty.[1]

Nevertheless, the vigilantes, who had previously executed Rosario Villa's paramour, seized her and shot her. That was, wrote historian J.M. Guinn, " the only instance in the seventy-five years of Spanish and Mexican rule in California, of the people, by popular tribunal, taking the administration of justice out of the hands of the legally constituted authorities.[1]

When the Los Angeles Common Council (which preceded the Los Angeles City Council) was formed in 1850 after Los Angeles was incorporated as an American town, Requena became one of its charter members. He served during the periods of 1850—1854, 1856 (when as council president, he also served briefly as acting mayor), and 1864—1868.[2][3]

Requena was elected to the first Los Angeles County Board of Supervisors in 1852.[4] In 1854 he became a trustee in the city's first board of education.[1]