Gaston was born in Halifax, Nova Scotia, and grew up in Fredericton.

His parents are both authors, Bill Gaston and Dede Crane.

[7] Gaston's short films "Bardo Light", "'Til Death" , and "Godhead" were all nominated for Leo Awards in the Student Production category.

[12][13] At the 2015 Vancouver International Film Festival, Gaston won the B.C.

[14][15] At the 2016 Leo Awards, Gaston's film The Devout won the top prize (Best Motion Picture) and various other awards including Best Screenwriting for Gaston himself.