RSS Article Feed

Los Pobladores 200 | Descendants of the founders, El Pueblo de Los Angeles, 1781 » About us, Member Biographies » Ronald Raymond Crosthwaite (Aka Raymond Ronald Osuna)

Ronald Raymond Crosthwaite (Aka Raymond Ronald Osuna)


(AKA) Raymond Ronald Osuna

(underlined names denote Pobladore lines)

Son of Raymond Joseph Osuna and Carrie Lillian Arguello.

He is a descendent of one of the eleven original founding families of Los Angeles. Jose Antonio Basilio Rosas, and two of the soldados, Antonio Cota (escolta) Francisco Lugo (escolta).

Basilio Rosas was born in 1714 and was married to Maria Manuela Calixtra Hernandez. Basilios’s great granddaughter, Maria de Los Dolores Rosas was married to Bonifacio Ygnacio Lopez in San Diego. Their daughter, Josefa, Maria Lopez, married Philip Crosthwaite and their daughter, Josefa married Julio Osuna.

Julio Osuna is the son of Leandro Osuna and Francisca Marron. Their son Ramon Nacho is the father of Raymond Joseph who is the father of Raymond Ronald. Raymond’s mother married a second time and she chose, unknowingly, it is assumed, his fathers cousin who was a Crosthwaite. Raymond’s middle name was then changed to become his first name and his first name was to become his middle name. He is now known as Ronald Raymond Crosthwaite, which by coincidence makes him his own cousin, since Philip Crosthwaite is his great great maternal grandfather.

Julio was the great grandson of Juan Ismario de Osuna who escorted Junipero Serra as corporal of the guard in 1769 helping to establish the first of the twenty-one Missions to spread along the coast of California. Juan Ismario married a local native from the Kumeyaay tribe later known as the Mission Indians. Their first son Juan Maria became the first mayor (alcalde) of San Diego and grantee of the Spanish land grant Rancho San Dieguito, now known as Rancho Santa Fe.

Part of the old land grant was owned by the famous crooner Bing Crosby, who refurbished the original adobe then built his home adjacent to the original structure. Another portion of the land grant was known as Pickfair owned by the late silent film star Douglas Fairbanks and his wife Mary Pickford. During the 1984 Olympics in Los Angeles the property was used for several equestrian events. As a design for one of the jumps, they used the Osuna branding symbol and gave credit to the Osuna family in their brochure.

Antonio Cota, (escolta) son of Andres de Cota and Angela de Leon, was born circa 1745 and married Maria Bernarda Chigilia. Antonio Cota’s granddaughter, Maria Antonia Avila (AKA Renden), was married to Jose Maria Lugo the grandson of Francisco Lugo, (escolta). His daughter, Tomasa Lugo married Francisco Arguello. Francisco was the grandson of Josef Dario Arguello, lieutenant (born 1753), who came with the 1781 expedition to Alta California accompanying Captain Rivera y Moncada to found the pueblo of Los Angeles. He was commissioned by Governor Fages at the presidio of Santa Barbara to put the Pobladores officially in possession of their land. This took place on Los Angeles’ 5th birthday, September 4, 1786. Arguello appointed corporal Feliz and private Roque de Cota (escolta) to act as legal witnesses. Each Pobladore was officially granted his house, his farm lots and finally a registered brandi ng iron. Each proud recipient signed the papers with a cross.

Arguello later became the commandante of the San Francisco Presidio, then acting governor of Alta California in 1814-15 and governor of lower California in 1851-22. Josef’s son, Santiago, became the commandante of the San Diego Presidio during the official secularization of the missions. He held many public offices and was grantee of the ex-mission properties, which was put in, trust to Philip Crosthwaite, then treasurer of San Diego until the documents could be put in order. In 1836 he was elected as the second mayor (alcalde) of San Diego, after Juan Maria Osuna, and was grantee of Rancho Tijuana, which is still in possession of the Arguello family in Mexico.

Santiago’s grandson, Ronald’s great grandfather, Alfredo Alejandro Arguello , became the first Los Angeles “Key-Stone Cop”. His badge, No. 1, still remains in possession of the family. He retired after thirty years on the force with the rank of captain.

Ronald Crosthwaite is in the process of writing an historical novel containing most all of the above and is also working on a screenplay of one of his more interesting family characters.


Santiago Arguello

Santiago Arguello

Philip Crosthwaite

Philip Crosthwaite

On duty

On duty



Filed under: About us, Member Biographies