There he married Margaret Lindsey Hill of Amherstburg and daughter of Maria Hill. Edward and Margaret opened a general store which supplied the workers during the building of the Rideau Canal, where Malloch was a "merchant, politician and local land shark" buying at least  in the Richmond area plus  in Loyalist rights. They later moved to Bytown (now Ottawa) where he served with the Carleton militia, becoming captain in 1837.
He married Margaret Lindsey Hill of Amherstburg, daughter of Maria Hill, and together they established a general store that catered to workers during the Rideau Canal's construction. Malloch was also involved in local politics and land transactions, buying rights in the Richmond area and Loyalist properties. He later relocated to Bytown (now Ottawa) and joined the Carleton militia, rising to captain in 1837.