Séamus McLean Ross

Séamus McLean Ross Headshot

Actor

Birth Place: Scotland, UK

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Séamus McLean Ross is a Scottish actor who trained at London’s Guildhall School of Music & Drama. On screen, his television debut came in “Payback” (ITV, 2023), a crime‑thriller starring Peter Mullan and Morven Christie, where McLean Ross portrayed Nicky Leigh in the fourth episode of the six‑part series.

His breakout role came in 2025 when he was cast as Colum MacKenzie—the rough‑hewn but layered younger brother of Ellen—in the Starz prequel series “Outlander: Blood of My Blood."

Concurrent with the series, he filmed the feature “California Schemin,” directed by James McAvoy, in which he plays Gavin Bain opposite Samuel Bottomley. The musical‑leaning biopic charts the rise of Scottish rap duo Silibil N’ Brains.

Photos

Conor MacNeill and Seamus McLean Ross in 'Outlander: Blood of My Blood' Season 1 finaleHarriet Slater and Seamus McLean Ross in 'Outlander: Blood of My Blood' Season 1 finaleSam Retford, Conor MacNeill, and Seamus McLean Ross in 'Outlander: Blood of My Blood' Season 1Seamus McLean Ross and Sam Retford in 'Outlander: Blood of My Blood' Season 1Sam Retford and Seamus McLean Ross in 'Outlander: Blood of My Blood' Season 1Harriet Slater, Sally Messham, and Seamus McLean Ross in 'Outlander: Blood of My Blood' Season 1Harriet Slater and Seamus McLean Ross in 'Outlander: Blood of My Blood' Season 1Seamus McLean Ross in 'Outlander: Blood of My Blood' Season 1Matthew B. Roberts, Harriet Slater, Sam Retford, Seamus McLean Ross, Rory Alexander, Maril Davis, Hermione Corfield, and Jamie Roy at SDCC 2025Hermione Corfield, Rory Alexander, Seamus, Jamie Roy, Harriet Slater, and Sam Retford for 'Outlander: Blood of My Blood' at SDCC 2025Séamus McLean Ross for 'Outlander: Blood of My Blood' at SDCC 2025Séamus McLean Ross for 'Outlander: Blood of My Blood' at SDCC 2025

News aboutSéamus McLean Ross

Harriet Slater, Jamie Roy, Sadhbh Malin, Hermione Corfield, and Jeremy Irvine in 'Outlander: Blood of My Blood' Season 1 finale

‘Outlander: Blood of My Blood’: Will Brian Break Up Ellen’s Wedding to Malcolm? What Finale Photos Reveal

 Jeremy Irvine, Hermione Corfield, Jamie Roy, Harriet Slater, and Rory Alexander in 'Outlander: Blood of My Blood' Season 1

‘Outlander: Blood of My Blood’: Julia & Henry Reunite at Castle Braemar in Episode 9 First Look (PHOTOS)

 'Outlander: Blood of My Blood' Season 1, Episode 4 photos

‘Outlander: Blood of My Blood’ Julia Helps Brian & Ellen in Latest Look at Episode 4 (PHOTOS)

 Hermione Corfield and Tony Curran for 'Outlander: Blood of My Blood' Aftershow
Spoiler Alert

‘Outlander: Blood of My Blood’ Aftershow: Stars on Julia’s Decision to Save Her Baby & MacKenzie Family Drama (VIDEO)

 Matthew B. Roberts, Harriet Slater, Sam Retford, Seamus McLean Ross, Rory Alexander, Maril Davis, Hermione Corfield, and Jamie Roy at SDCC 2025
Comic-Con

‘Outlander: Blood of My Blood’ Team Previews New Love Stories, Bonding With Sam Heughan & More From SDCC (VIDEO)

 'Outlander: Blood of My Blood's Jamie Roy and Harriet Slater, and 'Outlander's Sam Heughan, Sophie Skelton, and Richard Rankin pose for potraits at TV Insider and TV Guide Magazine's SDCC 2025 studio
Comic-Con

See ‘Outlander’ & ‘Blood of My Blood’s Stars Dazzle in Our SDCC Portrait Studio (PHOTOS)

 Jamie Roy and Andrew Whipp as Brian Fraser in 'Blood of My Blood' and 'Outlander'

‘Outlander: Blood of My Blood’: Every ‘Outlander’ Character Returning for the Spinoff So Far (PHOTOS)

 Rory Alexander and Sam Retford join 'Outlander: Blood of My Blood' as young versions of Murtagh and Dougal, previously played by Duncan Lacroix and Graham McTavish

‘Outlander: Blood of My Blood’ Casts Young Murtagh, Dougal & More