Answer the question at the end by quoting:

The Stone Poneys were a folk-rock trio formed in Los Angeles, consisting of Linda Ronstadt on vocals, Bobby Kimmel on rhythm guitar and vocals, and Kenny Edwards on lead guitar. Their recordings include Ronstadt's first hit song, a cover of Mike Nesmith's "Different Drum". Even at this early stage, Ronstadt was already showcasing her performances of an eclectic mix of songs, often from under-appreciated songwriters, requiring a wide array of backing musicians. As a testament to enduring interest in the trio, the band's three albums: The Stone Poneys; Evergreen, Volume 2; and Linda Ronstadt, Stone Poneys and Friends, Vol. III, were released together as single CDs for the first time in the 1990s in the US (nearly 30 years after the music was recorded), with the first two albums reissued in Australia in 2008.
After dropping out of Tucson's Catalina High School, and completing a semester at the University Of Arizona, Linda Ronstadt decided to move to the Los Angeles area in December 1964 to join Bobby Kimmel and form a band. Ronstadt described Kimmel's vision of the band: "It was going to be five people. We had an electric autoharp and a girl singer, and we thought we were unique in the world. And it turned out The Jefferson Airplane and the Lovin' Spoonful had beaten us." The group trimmed down to a trio that called themselves The Stone Poneys. Their (misspelled) name came from Delta Blues singer Charley Patton's 1929 song "The Stone Pony Blues" (also known as "Pony Blues"). The band was discovered by a couple of music industry executives while rehearsing at a soul food restaurant called Olivia's, located in Ocean Park, a community between Venice Beach and Santa Monica. Olivia's was famous for its food and clientele, including The Doors. In 1965, they recorded the Johnny Otis song "So Fine" and several others. Mike Curb, who at that time was working for Mercury, produced the sessions. The record company wanted them to change the group's name to "The Signets" and sing surf music, which the trio chose not to do. Instead, The Stone Poneys became a leading attraction on the Los Angeles club circuit, with Ronstadt usually performing on stage in a miniskirt and bare feet. They worked intimate clubs like The Troubadour in Hollywood, where they were opening for such musicians as Odetta and Oscar Brown Jr.; The Insomniac in Hermosa Beach, where they often appeared with The Chambers Brothers; and The Bitter End in Greenwich Village. One night at The Troubadour, the band's first manager, Herb Cohen, told Kimmel in front of Ronstadt: "Well, I can get your chick singer recorded, but I don't know about the rest of the group". Linda Ronstadt called this "the beginning of the end", although this occurred even before they were signed to Capitol, but Ronstadt insisted that she would not record without the band. The Stone Poneys broke up briefly in this time period, and Cohen tried to connect Ronstadt with Frank Zappa to make a demo, and also with Jack Nitzsche, but nothing ever materialized (she and Zappa - who were both being managed by Cohen in this time period - would later make a radio commercial for Remington brand electric shavers that was rejected by the company).

Did anyone join Linda Ronstadt in the band?

Bobby Kimmel

Answer the question at the end by quoting:

Matthew Boulton (; 3 September 1728 - 17 August 1809) was an English manufacturer and business partner of Scottish engineer James Watt. In the final quarter of the 18th century, the partnership installed hundreds of Boulton & Watt steam engines, which were a great advance on the state of the art, making possible the mechanisation of factories and mills. Boulton applied modern techniques to the minting of coins, striking millions of pieces for Britain and other countries, and supplying the Royal Mint with up-to-date equipment.
The elder Boulton's business prospered after young Matthew's birth, and the family moved to the Snow Hill area of Birmingham, then a well-to-do neighbourhood of new houses. As the local grammar school was in disrepair Boulton was sent to an academy in Deritend, on the other side of Birmingham. At the age of 15 he left school, and by 17 he had invented a technique for inlaying enamels in buckles that proved so popular that the buckles were exported to France, then reimported to Britain and billed as the latest French developments. On 3 March 1749 Boulton married Mary Robinson, a distant cousin and the daughter of a successful mercer, and wealthy in her own right. They lived briefly with the bride's mother in Lichfield, and then moved to Birmingham, where the elder Matthew Boulton made his son a partner at the age of 21. Though the son signed business letters "from father and self", by the mid-1750s he was effectively running the business. The elder Boulton retired in 1757 and died in 1759. The Boultons had three daughters in the early 1750s, but all died in infancy. Mary Boulton's health deteriorated, and she died in August 1759. Not long after her death Boulton began to woo her sister Anne. Marriage with a deceased wife's sister was forbidden by ecclesiastical law, though permitted by common law. Nonetheless, they married on 25 June 1760 at St. Mary's Church, Rotherhithe. Eric Delieb, who wrote a book on Boulton's silver, with a biographical sketch, suggests that the marriage celebrant, Rev. James Penfold, an impoverished curate, was probably bribed. Boulton later advised another man who was seeking to wed his late wife's sister: "I advise you to say nothing of your intentions but to go quickly and snugly to Scotland or some obscure corner of London, suppose Wapping, and there take lodgings to make yourself a parishioner. When the month is expired and the Law fulfilled, live and be happy ... I recommend silence, secrecy, and Scotland." The union was opposed by Anne's brother Luke, who feared Boulton would control (and possibly dissipate) much of the Robinson family fortune. In 1764 Luke Robinson died, and his estate passed to his sister Anne and thus into Matthew Boulton's control. The Boultons had two children, Matthew Robinson Boulton and Anne Boulton. Matthew Robinson in turn had six children with two wives. His eldest son Matthew Piers Watt Boulton, broadly educated and also a man of science, gained some fame posthumously for his invention of the important aeronautical flight control, the aileron. As his father before him, he also had two wives and six children.

Was the invention successful?
that proved so popular that the buckles were exported to France,