DAVENPORT, Iowa (AP) – An eastern Iowa man battling terminal cancer has died amid his fight to grow medicinal marijuana for his personal use. Dottie Mackenzie confirmed Tuesday that her 49-year-old son Benton Mackenzie died early Monday at his Long Grove, Iowa, home.

Benton Mackenzie had been growing marijuana to create medicinal oil he could both consume and apply to his tumors. He and his wife, Loretta Mackenzie, were convicted in 2014 for conspiring to grow marijuana. The trial garnered national attention.

The Quad-City Times reports the entire family has faced prosecution, including his parents who received misdemeanor counts for hosting a drug house. Those charges were eventually dropped. Dottie MacKenzie says she has found peace with the situation and her son’s death.