Mark Howard Dennison Constellation Software Inc. Contact us and we can try and connect you with Mark Howard Dennison . Search Lawyers Search Practice area: litigation Current Status: Practising Law - Employed Call date: n/a Reviews Review Mark Howard Dennison Review Cancel reply 12345 Your email address will not be published. Required fields are marked *Name * Email * Write Your Review Here Contact 1200-20 Adelaide St E Toronto, Ontario M5C 2T6 Read more about the law: Can you buy property while separated? Is it okay to hack your spouses phone?