Ronald DeFeo Jr.

1951 - 2021

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Ronald Joseph DeFeo Jr. (September 26, 1951 – March 12, 2021) was an American mass murderer who was tried and convicted for the 1974 killings of his father, mother, two brothers, and two sisters in Amityville, New York. Sentenced to six counts of 25 years to life, DeFeo died in prison on March 12, 2021. Read more on Wikipedia

Since 2007, the English Wikipedia page of Ronald DeFeo Jr. has received more than 5,661,544 page views. His biography is available in 15 different languages on Wikipedia. Ronald DeFeo Jr. is the 201st most popular extremist, the 5,380th most popular biography from United States and the 66th most popular American Extremist.

Memorability Metrics

  • 5.7M

    Page Views (PV)

  • 50.02

    Historical Popularity Index (HPI)

  • 15

    Languages Editions (L)

  • 2.70

    Effective Languages (L*)

  • 2.73

    Coefficient of Variation (CV)


Among extremists, Ronald DeFeo Jr. ranks 201 out of 283Before him are Richard Speck, Stanley Williams, Ross Ulbricht, Mary Surratt, Charles Starkweather, and Stand Watie. After him are Frank James, Abu Ayyub al-Masri, Irmgard Möller, Abdullah Çatlı, Herbert Mullin, and Axeman of New Orleans.

Most Popular Extremists in Wikipedia

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Among people born in 1951, Ronald DeFeo Jr. ranks 273Before him are Bob McAdoo, Vladimír Špidla, John Scofield, Michel Pollentier, Joe Jordan, and Harry Hamlin. After him are Tom Hamilton, Izzat Ghazzawi, Anna Dymna, Ryūsei Nakao, Unshō Ishizuka, and Anthony Phillips. Among people deceased in 2021, Ronald DeFeo Jr. ranks 299Before him are Jessica Walter, Carlos Marín, Mustafa Ben Halim, Mohammad-Taqi Mesbah-Yazdi, Tarcísio Meira, and Pat Martino. After him are John Warner, Marie-Claire Blais, Chris Dickerson, Medea Abrahamyan, Kalyan Singh, and Vassilis Alexakis.

Others Born in 1951

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Others Deceased in 2021

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In United States

Among people born in United States, Ronald DeFeo Jr. ranks 5,380 out of 20,380Before him are Lilian Jackson Braun (1913), Harry Hamlin (1951), Brian G. Hutton (1935), Marc Lawrence (1910), Lynn Anderson (1947), and Mark Tornillo (1954). After him are Neil Flynn (1960), Embeth Davidtz (1965), Lainie Kazan (1940), Conan O'Brien (1963), Tom Hamilton (1951), and John Warner (1927).

Among EXTREMISTS In United States

Among extremists born in United States, Ronald DeFeo Jr. ranks 66Before him are Richard Speck (1941), Stanley Williams (1953), Ross Ulbricht (1984), Mary Surratt (1823), Charles Starkweather (1938), and Stand Watie (1806). After him are Frank James (1843), Herbert Mullin (1947), Axeman of New Orleans (null), Christopher Scarver (1969), William Bonin (1947), and Ottis Toole (1947).