DRACUT - Patricia A. (Pelletier) Brown, 58, a Dracut resident and Lowell native, died unexpectedly Saturday, July 20, at the Holy Family Hospital in Methuen. She was the wife of Arthur Brown, a Dracut letter carrier, with whom she would have celebrated their 39th wedding anniversary in September.She was born in Lowell on May 16, 1944, a daughter of the late Roland and Dorothy M. (Freeman) Pelletier. She was educated in the Lowell school system.She is survived by two sons, David Brown, and Douglas Brown, both of Dracut; a daughter and son-in-law, Kimberly and Randy Masson, of Pelham; four grandchildren, Andrew and Rebecca Masson and Joshua and Michelle Brown; a sister and brother-in-law, Elaine and James Furtado of Lowell; also several nieces and nephews.