The singer and her NFL star partner Kelce tied the knot during a lavish ceremony at Madison Square Garden in New York on Friday night, bringing together hundreds of celebrity guests for one of the most closely watched show business events of the year.
But the celebrations were marred by the death of Kirk Schwabe, 69, a former teacher and bodyguard who had remained a trusted figure throughout Swift's rise to global fame.
The Telegraph reported Schwabe died from renal cancer on the same day the couple exchanged vows.
Before becoming part of Swift's security team, Schwabe was a Chicago police officer and later taught criminal justice at Henderson High School in Nashville, Tennessee, between 2004 and 2006.
He went on to protect Swift during the early years of her career as her fame accelerated, remaining close to the singer long after stepping away from the role.
Swift's wedding dominated headlines as Madison Square Garden was transformed into an indoor garden for around 1000 guests, while giant billboards outside the venue confirmed the couple's marriage.
In one of his final interviews before the wedding, Schwabe reflected on the advice he gave his former student as her career took off.
"You're a superstar. This is not fun and games no more. You are it. Everything keeps going up and up and up, and the sky's the limit for you," he said.
He also described the pressure of protecting the singer during her early years of superstardom.
"If anything happens, I'm the guy…," he said.
Swift paid tribute to Schwabe years earlier by naming her teacher character "Mr Schwabe" in her cameo appearance in Garry Marshall's romantic comedy Valentine's Day - a nod to the man who had taught and protected her.
Although Schwabe eventually stepped away from the job because he was exhausted by the demands of Swift's growing fame, he continued to follow her career closely.
His family said he remained immensely proud of everything she achieved and had been delighted that she was marrying Kelce.
In his final interview, Schwabe also expressed his confidence in Swift's choice of husband.
"I do trust Taylor's judgment. She knows what's best," he said.