Former Calgary alderman and provincial MLA Jon Lord has died.

The 57-year-old died of a severe heart attack at his home Tuesday night. Lord had no recent health problems.

Lord's wife Sheryl says the family is in complete shock. Details around a public memorial will be released at a later date. 

Mayor Naheed Nenshi said he was shocked and saddened to hear of Lord's passing. 

“His legacy — in Alberta, Calgary and especially Marda Loop — cannot be overstated," said Nenshi. 

"Even if you didn’t see eye to eye with him on a particular issue, the debate was always respectful. Our city has lost a champion, and far too soon. He will be greatly missed."

Progressive Conservative MLA Thomas Lukaszuk sat beside Lord for two years in the legislature. The pair were both rookies in 2001, and their names were next to each other alphabetically. 

"If you only allowed me one word to describe him, I would have to use the word 'brilliant,'" said Lukaszuk.

"He really was a very smart man. When I say smart I mean extremely well read. Good understanding of history, geography, geopolitics, both Canadian and International. He was always a source of fascinating, yet relevant information."  

'He went way too young'

Ward 10 Coun. Andre Chabot says he spoke with Lord often about issues and policy, calling him a gentle soul.

"I'm really sad to hear it, he went way too young," said Chabot.

"He will be missed."

Marc Doll, president of the Marda Loop Community Association, said Lord loved the neighourhood.

"He's a community pillar in that he's had a presence here for so long," he said. 

Lord was an active community member in Marda Loop, where he owned the movie store Casablanca Video. 

"Nothing talks about resilience more than having a video store in 2014 and keeping it here in Marda Loop."

He served two terms as an alderman for Ward 8 between 1995 and 2001 and one term as a Progressive Conservative MLA for Calgary Currie between 2001 and 2004.

He ran for mayor in the 2010 and 2013 municipal elections.

In 2012, he ran for the Calgary Centre federal Conservative nomination.