Patrick Stewart, the Shakespearean stage actor who became a global star as Captain Jean-Luc Picard in "Star Trek: The Next Generation" and as Professor Charles Xavier in the "X-Men" films, has died at the age of 86.

Stewart died on Wednesday at his home in Los Angeles, according to a statement shared on his social media account on Thursday by his spokesperson, Kelly Bush Novak. The statement said he died "in the loving care of his beloved wife Sunny following a brief and poignant journey with Alzheimer's Disease and Lewy Body Dementia". Neither diagnosis had previously been publicly disclosed.

From Yorkshire to the Royal Shakespeare Company

Stewart was born on July 13, 1940, in Mirfield, West Yorkshire, and rose from a working-class childhood to become one of Britain's most respected stage actors. He joined the Royal Shakespeare Company in the 1960s, building a reputation for classical roles and a commanding voice long before mainstream fame arrived. He was knighted by Queen Elizabeth II in 2010 for his contributions to drama.

Picard: fame at 47

Stewart was 47 when he was cast as Captain Jean-Luc Picard, commander of the Starship Enterprise, in "Star Trek: The Next Generation", which ran from 1987 to 1994. He played Picard in 176 episodes across seven seasons, then in four feature films, and returned to the role in the streaming series "Star Trek: Picard", which ran from 2020 to 2023. The role made him a fan favourite and a defining figure of science fiction television.

Professor X and a second franchise

In 2000, Stewart took on a second iconic role as Professor Charles Xavier, the telepathic founder of the X-Men, in Marvel's film franchise. He played the character for more than two decades, across seven films including "X2", "X-Men: Days of Future Past" and "Logan", and later appeared as a variant of the character in "Doctor Strange in the Multiverse of Madness".

Tributes pour in

Tributes came from across the worlds Stewart inhabited. Ian McKellen, his longtime friend and "X-Men" co-star, recalled a friendship of nearly half a century that began at the Royal Shakespeare Company. Hugh Jackman remembered him as a mentor and friend, while William Shatner, LeVar Burton and Jonathan Frakes were among his "Star Trek" colleagues paying tribute. His son Daniel shared a photograph of the pair performing together on stage.

Stewart is survived by his third wife, musician Sunny Ozell, and by his two children, Daniel and Sophie, from his first marriage to actress and dancer Sheila Falconer. His career spanned more than six decades on stage and screen — from Shakespeare to the bridge of the Enterprise — and left two characters that will outlive their creator in popular culture.