Maurice Picard was a Human male, a native of La Barre, France on Earth. He was the husband of Yvette Gessard, the father of Robert and Jean-Luc Picard,, father-in-law of Marie Picard, and the paternal grandfather of René Picard. He continued the family business of winemaking under the Chateau Picard label and placed importance on keeping the family estate in the same state without making changes to it.
Maurice Picard was a very traditional man who did not believe in technology. He feared the loss of values and had frequent discussions with Yvette about whether or not to get a replicator. He also opposed Jean-Luc's decision to join Starfleet, instead preferring him to remain home and tend to the family vineyards in La Barre. A rift grew between father and son because of this and ultimately never fully healed, something which Jean-Luc regretted in later years. Maurice Picard was deceased by the 2360s, by which time his eldest son, Robert, had taken over the vineyards. (TNG: "Family", "Conundrum", "Bloodlines")
While his sons were young boys, Maurice's father, as Jean-Luc described, deteriorated "from a powerful, intelligent figure to a frail wisp of a man, who could barely make his own way home." (TNG: "Night Terrors")