Isaac Merritt Singer was a giant of a man.
Not only did his six-foot-four-inch height allow him to physically dominate any room he entered, but his seminal invention of the first home sewing machine made him an early icon for 19th century capitalism, not to mention extremely wealthy. With plants mass-producing his machines for sale across North America and Europe, sewing machines transformed the lives of countless women. It's hardly surprising that Mahatma Gandhi would later refer to Singer's machine as "one of the few useful things ever invented." 
Despite his success though, it was Singer's private life that would eventually lead to his undoing. A private life that would also lead to one of the most scandalous trials of the late 19th century.
You see, along with his considerable height, Singer was also a man with some very, er, healthy appetites. Due to his rocky first marriage to Catherine, he often left her and the two children they had together alone while he pursued his other great love: acting. As part of a theatrical troupe, he was frequently on the road and it was during one of his frequent tours that he met the lovely Mary Ann Sponslor. One thing led to another and they began what would be a rather lengthy relationship. Despite never securing a divorce from Catherine, he and Mary Ann soon settled in New York where they lived together as husband and wife. Though Mary Ann was probably not too thrilled with this arrangement, Singer managed to reassure her that he would marry her for real once he divorced his first wife (I did mention that he was an actor, right?).
It was also around this time that Singer's constant tinkering paid off he managed to produce the first commercially successful home sewing machine. Even as he fought off lawsuits (from various other inventors who claimed that they deserved the patent), the launch of Singer's sewing machine company allowed him to found a business empire which soon made him one of the wealthiest men in America. Taking advantage of this newfound wealth, Singer was able to buy a mansion for his Mary Ann on Fifth Avenue in New York . They certainly needed the room considering that the two of would have ten children together. And Catherine? She and her two children were basically cut off without a cent.
Not that many people in New York knew about Catherine. For years after founding his company , Singer continued to introduce Mary Ann to friends, business associates, and employees as "Mrs. Singer," something that Mary Ann had no problem encouraging. Though they never joined the "Inner Circle" of New York's high society, being "Mrs. I.M. Singer" certainly had its perks. But there was still the troubling question of what to do about Catherine....
In 1860, just ten years after moving in with Mary Ann, Isaac Singer filed for a divorce from Catherine. By all reports, this divorce, which was apparently based on allegations about her infidelity, caught the first Mrs. Singer completely by surprise. She only became aware that Singer was divorcing her when she was first served with the legal papers. Sadly, Catherine basically ignored the writ as she was convinced that it was all a mistake. Her failure to respond allowed Singer's lawyers the legal edge they needed. Telling the court that her lack of response meant that she admitted to adultery, the divorce was granted. Catherine would only learn about this after the fact and, as friends would later report, was too "poor and too shrinking in disposition to recover her legal rights." She would be left in virtual poverty for years afterward.
But life was all that blissful for Mary Ann, either. Despite his divorce from Catherine, the long-promised wedding to Singer never materialized. Rumours about her "husband" and his voracious sexual appetites kept getting back to her, including his habit of frequenting prostitutes when he was away on business. But she also had her suspicions about one of his employees, Mary McGonigal, suspicions which were finally confirmed when she spotted the two of them riding in a carriage along Fifth Avenue. This led to a major row that ended up with Singer knocking her down and leaving her bleeding in the hall of their stately home.
On discovering that Singer already had five children together, Mary Ann decided to get her revenge. After going to the police, Mary Ann (under the name of "Mrs. I.M. Singer") had her husband arrested for bigamy and assault. Released on bond, Singer promptly fled to England with Mary and her children while the courts continued to make sense of his bizarre dual life. Which soon became a triple life when a third woman, Mary Eastwood Walters, was discovered living in lower Manhattan. Much as with Mary Ann, she and Singer had been living together as husband and wife (under the name "Merritt") and had at least one child together. She and her daughter would soon join the legal battle for a share of the Singer fortune.
As for Mary Ann Sponslor, she continued with her own claim by outlining Singer's various infidelities. Arguing that she was Singer's common-law wife, Mary Ann demanded a formal divorce, including financial support for her ten children. Though the divorce was never granted, Singer's lawyers made a hefty financial settlement in exchange for her dropping her claim to his estate. She later remarried and soon dropped out of our story completely.
Though Singer and Mary Ann McGonigal lived in London for a while, he quickly abandoned her and moved to Paris where he pursued yet another relationship. This time, the object of his affection was a Frenchwoman, Isabella Boyer, with whom he lived for a while in Paris. Though already having a husband at the time, Isabella divorced him and married Singer in 1863. They would go on to have six children together (and Isabella was already pregnant when the marriage took place). In that same year, the I.M. Singer Company was dissolved, likely to allow Singer's business associates to distance themselves from all the scandal surrounding the founder.
With his legal troubles finally settled and various wives paid off, Singer returned to the United States and started building a new estate in Yonkers. Realizing that he had become a social pariah, Singer soon abandoned this plan and returned to Europe to live with Isabella and their growing family. Finally settling down in the United Kingdom, he purchased property near Devon, England in 1871. Singer then started building his own castle, Oldway Mansion, to act as his private residence but it was never completed during his lifetime.
Singer's death in 1875 quickly triggered a new war among his children (twenty-two in all in case you weren't keeping count, most of whom had never even met) over his $14-million-dollar estate. While his will formally recognized all of his illegitimate children, all of his wives, with the exception of Isabella, didn't receive anything. This included his first wife, Catherine, though he left money to her two children. After a lengthy legal battle, the other heirs finally negotiated a $60,000 settlement which allowed Catherine to live in comfort for the rest of her life. Having never remarried, she died in 1884 at the age of sixty-nine.
As for Singer's company, it was reformed in 1865 as the "Singer Manufacturing Company" and continues to be a major corporation even today. Isaac Merritt Singer's other great legacy are. naturally enough, his numerous children, some of whom had no idea that their father was a millionaire until being named in his will. Though he has hundreds of living descendants today, many of whom are still wealthy from the money they inherited. Still, it's probably safe to say that they aren't big on extended family reunions.