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    Birth name :
  • William Joseph Crawford
  • Origin :
  • San Francisco, California
  • Genres :
  • Hip hop
  • West Coast hip hop
  • Also known as :
  • Rich Rocka
  • Labels :
  • Black Wall Street Records
  • Hoo-Bangin Records
  • Konvict Muzik
  • Years active :
  • 2002–present
  • Born / Died
  • Born:(1984-01-28) January 28, 1984 (age 31)
  • Website :
  • [4]
  • William Joseph Crawford (born January 28, 1984), better known by his stage names Ya Boy, Rich Rocka or PKwinzio, is an American rapper from the Fillmore District, San Francisco. He is a younger cousin of San Francisco rapper San Quinn and also the cousin of San Diego Chargers wide receiver Stevie Johnson. Crawford graduated from El Camino High School in South San Francisco, California, in 2002. He was formerly signed to both of Akon's labels Konvict Muzik and Kon Live Distribution.