# Fame.am profile — machine-readable export
# Canonical URL: https://fame.am/person/sylvester-h-roper
# Generated: 2026-08-14T06:37:54.995Z

schema: https://schema.org/Person
url: "https://fame.am/person/sylvester-h-roper"
name: "Sylvester H. Roper"
slug: "sylvester-h-roper"
description: "Sylvester Howard Roper was an American inventor and a pioneering builder of early automobiles and motorcycles from Boston, Massachusetts. In 1863 he built a steam carriage, one of the earliest automobiles. The Roper steam velocipede of 1867–1869 may have been the first motorcycle, for which he was inducted into the Motorcycle Hall of Fame in 2002. He is also the inventor of the shotgun choke and a revolver repeating shotgun."
tagline: "American inventor (1823-1896)"
image: "https://commons.wikimedia.org/wiki/Special:FilePath/Sylvester_H_Roper_Died_in_the_Saddle_Boston_Daily_Globe_2_June_1896.png?width=1200"
gender: "male"
country:
  name: "United States"
  isoCode: "US"
category:
  name: "Scientists"
  slug: "scientists"
profileType:
  name: "Scientist"
  slug: "scientist"
  entityType: "https://www.wikidata.org/entity/Q39631"
birthDate: "1823-11-24"
deathDate: "1896-06-01"
livingStatus: "DECEASED"
scores:
  popularity:           45.04
  momentum:             0
  historical:           10.49204666666667
  currentAttention:     0
  sourceConfidence:     60
  profileCompleteness:  70
  trendDirection:       "FALLING"
ranks:
  global:   null
  country:  null
  category: null
sources:
  - url: "https://zh.wikipedia.org/wiki/%E8%A5%BF%E5%B0%94%E7%BB%B4%E6%96%AF%E7%89%B9%C2%B7%E9%9C%8D%E5%8D%8E%E5%BE%B7%C2%B7%E7%BD%97%E7%8F%80"
    title: "西尔维斯特·霍华德·罗珀"
    type:  "WIKIPEDIA"
  - url: "https://ar.wikipedia.org/wiki/%D8%B3%D9%8A%D9%84%D9%81%D8%B3%D8%AA%D8%B1_%D8%A5%D8%AA%D8%B4_%D8%B1%D9%88%D8%A8%D8%B1"
    title: "سيلفستر إتش روبر"
    type:  "WIKIPEDIA"
  - url: "https://en.wikipedia.org/wiki/Sylvester_H._Roper"
    title: "Sylvester H. Roper"
    type:  "WIKIPEDIA"
  - url: "https://es.wikipedia.org/wiki/Sylvester_H._Roper"
    title: "Sylvester H. Roper"
    type:  "WIKIPEDIA"
  - url: "https://fa.wikipedia.org/wiki/%D8%B3%DB%8C%D9%84%D9%88%D8%B3%D8%AA%D8%B1_%D8%A7%DA%86_%D8%B1%D9%88%D9%BE%D8%B1"
    title: "سیلوستر اچ روپر"
    type:  "WIKIPEDIA"
  - url: "https://fi.wikipedia.org/wiki/Sylvester_Howard_Roper"
    title: "Sylvester Howard Roper"
    type:  "WIKIPEDIA"
  - url: "https://fr.wikipedia.org/wiki/Sylvester_H._Roper"
    title: "Sylvester H. Roper"
    type:  "WIKIPEDIA"
  - url: "https://id.wikipedia.org/wiki/Sylvester_H._Roper"
    title: "Sylvester H. Roper"
    type:  "WIKIPEDIA"
  - url: "https://mg.wikipedia.org/wiki/Sylvester_H._Roper"
    title: "Sylvester H. Roper"
    type:  "WIKIPEDIA"
  - url: "https://nl.wikipedia.org/wiki/Sylvester_Howard_Roper"
    title: "Sylvester Howard Roper"
    type:  "WIKIPEDIA"
  - url: "https://sv.wikipedia.org/wiki/Sylvester_Roper"
    title: "Sylvester Roper"
    type:  "WIKIPEDIA"
  - url: "https://uz.wikipedia.org/wiki/Sylvester_H._Roper"
    title: "Sylvester H. Roper"
    type:  "WIKIPEDIA"
  - url: "https://www.wikidata.org/wiki/Q2780910"
    title: "Wikidata"
    type:  "WIKIDATA"

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