Manuel Esquer was a business partner of Antonio Echavarria Aguirre in a general store named Echavarria, Esquer y Compania in Mocorito, Sinaloa. A subsequent candidate to the Mexican presidency, Francisco R. Serrano, worked in that store. Echavarria, a former mining engineer who made his first fortune of several million pesos in Bacubirito, was born circa 1861 to Casimiro Echavarria of Durango and Rosa Aguirre. Antonio started the water works company of Mocorito on February 4, 1903. After arriving in Mocorito in 1897, Echavaria acquired the Hacienda de los Tres Hermanos from Pedro (my grandfather), his brother Ramon Inzunza Gaxiola (sometimes mistakenly referred to as Ruperto in history books), their brother-in-law Adolfo Aviles, and the estate of Manuel Inzunza Gaxiola, upon the latter's death in 1899 (Manuel had risen to Lt Col in the war against French intervention, participated in the Tuxtepec rebellion alongside his long-term crony Francisco Canedo, obviously was a Porfirista ruling northern Sinaloa from 1872 onwards, and, best of all, died of indigestion from eating 14 nacatamales). The Esquers as you are probably aware were concentrated in Alamos and El Fuerte.