[1] With Hiram Norton, in 1829, he purchased a stage coach line running between York (later Toronto) and Kingston, becoming sole owner in 1830.

Weller made arrangements with other operators including his former partner to provide connecting service to Montreal.

In 1835, he expanded to offer service in winter from Toronto to Hamilton and Niagara and also opened a stage line connecting to Peterborough.

Weller was mayor of Cobourg in 1850, 1851 and 1863 and also served five years as a member of the town council.

His youngest son, John Laing Weller, was an engineer involved in the construction of the Welland Canal.