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Photo of Seamus Dever

Photo: Photo by Jennifer Cropped and retouched by Danyele / CC BY-SA 2.0 (source: Wikimedia Commons)

Seamus Dever

シーマス・デヴァー / しーます・でゔぁー

American actor

July 27, 1976 (age 49) ・ Flint, Michigan, United States

  • Michigan
  • actor
  • television actor
  • film actor

My Take

For me, Seamus Dever will always be Detective Kevin Ryan from Castle, the steady, grounded half of a great partnership that anchored years of that ABC series. What I respect is the Carnegie Mellon training underneath it; that's a serious theater pedigree, and it shows in the discipline he brought to a role that could have been forgettable. Born in Flint, Michigan, he's the kind of actor who builds a long, reliable career through ensemble work rather than chasing fame. I tend to value performers like him: the ones who make everyone around them better and rarely get the credit for it.

Overview

Seamus Patrick Dever (born July 27, 1976) is an American actor known for his role as Detective Kevin Ryan in the ABC series Castle.

Summary adapted from Wikipedia, licensed under CC BY-SA 4.0.

1. Profile

Name (English)
Seamus Dever
Name (Japanese)
シーマス・デヴァー
Reading
しーます・でゔぁー
Born
July 27, 1976 (age 49)
Zodiac / Chinese zodiac
Leo / Dragon
Origin
Flint, Michigan, United States
Blood type
Private
Height
Private
Agency
Private
Occupation
actor / television actor / film actor

2. Background

Elementary school
Private
Junior high
Private
High school
Mohave High School
University
Carnegie Mellon University

3. Relationships

Spouse
Private
Children
Private
Parents
Private
Siblings
Private

4. Personality

Motto

Private

Actor — see all → · Television actor — see all → · More people from United States →

7. About this entry

Tags

  • Michigan
  • actor
  • television actor
  • film actor
Last updated
2026-06-02

Facts are limited to publicly available information up to 2024; non-public items are marked "Private / Unknown". English text is machine-assisted (facts translated by Sonnet, "My Take" written by Opus 4.8). The Japanese page is the source of record.