His great-uncle (maternal grandmother's brother) was Bruce Kent, a political activist and former Roman Catholic priest, who was active in the Campaign for Nuclear Disarmament.
Grandson of director and producer Jonathan Alwyn. Great-grandson of composer, conductor, and music teacher William Alwyn, who was born William Alwyn Smith.
Son of Elizabeth, an author, columnist, and psychoanalytic psychotherapist, and Richard Alwyn, a documentary filmmaker.
Was in a band during high school called Anger Management.
Dated Taylor Swift from September 2016 to March 2023.
His ancestry is English, with smaller amounts of Irish, Scottish, and French/French-Canadian.