Jackson "Jack" Bartlett, aka "Grandpa", is the glue that holds Heartland together. He's an ex-rodeo cowboy and cattle rancher. The last thing he expected was raising a teenager again during his golden years.
Jack was born and raised at Heartland, back when it was a working cattle ranch. He would help his grandfather around the ranch as much as he could. He promised to his grandfather to hold onto Heartland, all 600 acres. He spent years on the rodeo circuit, getting dozens of buckles and is considered a legend.
Season 7 Edit
Jack and Lisa call it "quits" after his heart attack when she buys him a bed. They elope in the last episode of the season. When Tim shows up before the wedding, he is forced to keep it a secret until they choose to reveal this to the rest of the family.
Season 8 Edit
Tim accidentally calls Lisa Jack's wife in front of everyone. Lou makes a big deal of their secret.