# Fame.am profile — machine-readable export
# Canonical URL: https://fame.am/person/john-sadler
# Generated: 2026-08-13T16:30:56.125Z

schema: https://schema.org/Person
url: "https://fame.am/person/john-sadler"
name: "John Sadler"
slug: "john-sadler"
description: "John Sadler is a British historian specialising in the Anglo-Scottish Border conflicts during the Middle Ages. Sadler is a regular contributor to military and historical journals and has published a number of books on the subject. Some of his books were written in collaboration with Rosie Serdiville. He has taught and tutored history as well."
tagline: "British historian"
gender: "male"
country:
  name: "United Kingdom"
  isoCode: "GB"
category:
  name: "Writers"
  slug: "writers"
profileType:
  name: "Writer / Author"
  slug: "writer"
birthDate: "1953"
livingStatus: "LIVING"
scores:
  popularity:           36.2
  momentum:             0
  historical:           5.669834666666667
  currentAttention:     0
  sourceConfidence:     40
  profileCompleteness:  60
  trendDirection:       "STABLE"
ranks:
  global:   null
  country:  null
  category: null
platforms:
  - platform:  "WEBSITE"
    url:       "http://www.johnsadler.net/"
sources:
  - url: "https://en.wikipedia.org/wiki/John_Sadler_(historian)"
    title: "John Sadler (historian)"
    type:  "WIKIPEDIA"
  - url: "https://ar.wikipedia.org/wiki/%D8%AC%D9%88%D9%86_%D8%B3%D8%A7%D8%AF%D9%84%D8%B1"
    title: "جون سادلر"
    type:  "WIKIPEDIA"
  - url: "https://arz.wikipedia.org/wiki/%D8%AC%D9%88%D9%86_%D8%B3%D8%A7%D8%AF%D9%84%D8%B1"
    title: "جون سادلر"
    type:  "WIKIPEDIA"
  - url: "https://he.wikipedia.org/wiki/%D7%92'%D7%95%D7%9F_%D7%A1%D7%93%D7%9C%D7%A8_(%D7%94%D7%99%D7%A1%D7%98%D7%95%D7%A8%D7%99%D7%95%D7%9F)"
    title: "ג'ון סדלר (היסטוריון)"
    type:  "WIKIPEDIA"
  - url: "https://fa.wikipedia.org/wiki/%D8%AC%D8%A7%D9%86_%D8%B3%D8%AF%D9%84%D8%B1"
    title: "جان سدلر"
    type:  "WIKIPEDIA"
  - url: "https://fr.wikipedia.org/wiki/John_Sadler_(historien)"
    title: "John Sadler (historien)"
    type:  "WIKIPEDIA"
  - url: "https://www.wikidata.org/wiki/Q3182412"
    title: "Wikidata"
    type:  "WIKIDATA"

# bio (long form, separated for readability)
bio: |
  Imported from discovery source: wikidata-dump