She is survived by her husband and two-year-old son.
Maria Singh, née Princess Maria Galitzine, has passed away at the age of 31. According to an obituary published in the Houston Chronicle, she died of a sudden cardiac aneurysm on May 4, and was laid to rest the Orthodox section of Houston's Forest Park Westheimer Cemetery four days later.
Maria was born in Luxembourg to Prince and Princess Piotr Galitzine in 1988, and moved to Russia as a child. As an adult, she'd live in Brussels and Chicago before settling in Houston. She had attended Belguim's College of Art & Design, and worked as an interior designer.
Maria married chef Rishi Roop Singh in 2017, and their two-year-old son Maxim "was the apple of her eye," according to the obituary.
The Princess could trace her lineage back to Emperor Charles I—the last ruler of the Austro-Hungarian monarchy, who was exiled after World War I—and was a descendant of the Habsburg dynasty. However, her sister Princess Tatiana told the Houston Chronicle in 2018 that they didn't have a particularly royal upbringing.
"My life is completely normal unless we are invited to royal weddings. My mail sometimes says 'Princess Tatiana.' What was weird was when I went from 'Princess' to 'Mrs.' I had been a princess all my life," Tatiana said, referencing the transition to married life.
In addition to her her sister Tatiana, parents, husband, and son, Maria is survived by sisters Xenia Galitzine de Matta and Princess Alexandra, and her two brothers, Prince Dmitri and Prince Ioann.