Some famous people are prone to identity crisis. The bizarre case of National Basketball Association superstar Luka Doncic is one example.

The Dallas Mavericks guard/forward and Slovenia national basketball team member could not capitalize on his own name as his mother apparently owns the brand "Luka Doncic 7," the figure being his original jersey number.

Doncic had his mom, Mirjam Poterbin, trademark his NBA identity in the United States during his rookie year in the league in 2018 for business and charity purposes, but she refuses to give it up, New York Post reported.

He tried to have his name transferred to him last year, but the US Patent and Trademark Office refused. It also rejected his application for trademark for his name, minus the 7.

Doncic recently petitioned the office to cancel the trademark owned by his mother. While the decision is pending, he came up with a temporary personal logo: LD 77 S, the initial of his home country.

Meanwhile, the first son of the late Beatles John Lennon had issues with being his famous father's namesake.

Born John Charles Julian Lennon to Cynthia Lennon before his father left them for Yoko Ono when he was very young, the singer-songwriter recently told NYP that he had to deal with laughs from airport security staff whenever they look at the name John Lennon in his passport.

The 59-year-old Lennon said he has had enough of 40 years of such "crap."

He legally changed his name to Julian Charles John Lennon in 2020, according to NYP.

Julian Lennon, who has just released the album "Jude" as a follow-up to his 1984 debut record "Too Late for Goodbyes," now has no qualms being "reborn" and technically being only two years old under his new name.