== which death date is correct?    == 

  
 this page states his death date at 160ce. 
 G.R.S. Mead, via Hoeller,  http://www.gnosis.org/valentinus.htm  claims Tertullian placed Valentinus death much later than 160ce. by claiming that Valentinus lived after 175ce.   However, Tertullian himself was  born in 160, therefore if Tertullian was speaking first hand as a personal acquaintance it would mean that Valentinus death was later than the listed 160ce.  However, I'm not entirely sure how much of Tertullians history can be trusted as he also placed Origen and Valentinus as personal acquaintences, but by any timeline they could not have overlapped.    
 Could someone please note these problems to at least educate the reader for potential errors?  
 Which death date is correct?  

 signed by, Zoshac