Some context: Sir Lawrence Alma-Tadema,  (; born Lourens Alma Tadema Dutch pronunciation: ['l^ur@ns 'alma: 'ta:d@,ma:]; 8 January 1836 - 25 June 1912) was a Dutch painter of special British denizenship.
The outbreak of the Franco-Prussian War in July 1870 compelled Alma-Tadema to leave the continent and move to London. His infatuation with Laura Epps played a great part in his relocation to England and Gambart felt that the move would be advantageous to the artist's career. In stating his reasons for the move, Tadema simply said "I lost my first wife, a French lady with whom I married in 1863, in 1869. Having always had a great predilection for London, the only place where, up till then my work had met with buyers, I decided to leave the continent and go to settle in England, where I have found a true home."  With his small daughters and sister Atje, Alma-Tadema arrived in London at the beginning of September 1870. The painter wasted no time in contacting Laura, and it was arranged that he would give her painting lessons. During one of these, he proposed marriage. As he was then thirty-four and Laura was now only eighteen, her father was initially opposed to the idea. Dr Epps finally agreed on the condition that they should wait until they knew each other better. They married in July 1871. Laura, under her married name, also won a high reputation as an artist, and appears in numerous of Alma-Tadema's canvases after their marriage (The Women of Amphissa (1887) being a notable example). This second marriage was enduring and happy, though childless, and Laura became stepmother to Anna and Laurence. Anna became a painter and Laurence became a novelist.  He would initially adopt the name Laurence Alma Tadema instead of Lourens Alma Tadema and later adopt the more English Lawrence for his forename, and incorporate Alma into his surname so that he appeared at the beginning of exhibition catalogues, under "A" rather than under "T". He did not actually hyphenate his last name, but it was done by others and this has since become the convention.
Did they have any kids?
A: This second marriage was enduring and happy, though childless, and Laura became stepmother to Anna and Laurence. Anna became a painter and Laurence became a novelist.

Some context: A big band is a type of musical ensemble that usually consists of ten or more musicians with four sections: saxophones, trumpets, trombones, and a rhythm section. Big bands originated during the early 1910s and dominated jazz in the early 1940s when swing was most popular. The term "big band" is also used to describe a genre of music. One problem with this usage is that it overlooks the variety of music played by these bands.
Before 1914, social dance in America was dominated by steps such as the waltz and polka. As jazz migrated from its New Orleans origin to Chicago and New York City, energetic, suggestive dances traveled with it. During the next decades, ballrooms filled with people doing the jitterbug and Lindy Hop. The dance duo Vernon and Irene Castle popularized the foxtrot while accompanied by the orchestra of James Reese Europe.  One of the first bands to accompany the new rhythms was led by a drummer, Art Hickman, in San Francisco in 1916. Hickman's arranger, Ferde Grofe, wrote arrangements in which he divided the jazz orchestra into sections that combined in various ways. This intermingling of sections became a defining characteristic of big bands. In 1919, Paul Whiteman hired Grofe to use similar techniques for his band. Whiteman was educated in classical music, and he called his new band's music symphonic jazz. The methods of dance bands marked a step away from New Orleans jazz. With the exception of Jelly Roll Morton, who continued playing in the New Orleans style, bandleaders paid attention to the demand for dance music and created their own big bands. They incorporated elements of Broadway, Tin Pan Alley, ragtime, and vaudeville.  Duke Ellington led his band at the Cotton Club in Harlem. Fletcher Henderson's career started when he was persuaded to audition for a job at Club Alabam in New York City, which eventually turned into a job as bandleader at the Roseland Ballroom. At these venues, which themselves gained notoriety, bandleaders and arrangers played a greater role than they had before. Hickman relied on Ferde Grofe, Whiteman on Bill Challis. Henderson and arranger Don Redman followed the template of King Oliver, but as the 1920s progressed they moved away from the New Orleans format and transformed jazz. They were assisted by a band full of talent: Coleman Hawkins on tenor saxophone, Louis Armstrong on cornet, and multi-instrumentalist Benny Carter, whose career lasted into the 1990s.
Was there any important figures for this music era?
A:
the new rhythms was led by a drummer, Art Hickman, in San Francisco in 1916.