1901 Redpath Mansion murders
On June 13, 1901, two members of the prominent Redpath family were found shot to death in their mansion on Sherbrooke Street in Montreal's Golden Square Mile neighbourhood. Among the dead were Ada Maria Mills Redpath, a 59-year old widow and her 24-year-old son Jocelyn Clifford Redpath.
Source: Wikipedia — 1901 Redpath Mansion murders (CC BY-SA 4.0)