Porter was born in London in 1784. He was orphaned by 1796 and it is likely he commenced his career at sea shortly after. His first command was, sailing in the Liverpool to Barbados trade. Her owners, Barton, Irlam and Higginson specialized in that trade. Later, in the War of 1812, Tiger, still under Porter's command, was granted a letter of marque to operate offensively, not just defensively, against American shipping. Tiger, in company with, also a vessel that Barton, Irlam and Higginson owned, captured three American ships in 1813 as the two British ships were returning to England from Barbados. In 1810, he married Alice Roper in Liverpool, with whom he had four children. On 29 November 1811 Captain Porter stood trial at London for having taken on boardTiger at Carlisle Bay, Barbados, two deserters from the Royal Navy and having concealed them when the Navy sent a Lieutenant to look for them. Porter was found guilty and fined £500 and to be held at Newgate for 12 months or until he had paid his fine. It is not clear who paid the fine, if they did, and whether Porter spent any time in prison. Porter became a prominent sea captain, operating a small fleet out of his own yard at Liverpool. Other members of the Porter family sailed for the British East India Company.
Australia
In the late 1830s he suffered substantial losses at sea, which his son said were behind his decision to migrate. Porter sold his shipyard in Liverpool and took two of his ships, Porter, and Dorset, provisioned with livestock and a range of personnel, so that he could set up a relatively self-sufficient farming station in South Australia. He was accompanied by his wife, a son and daughter, William and Alice and an adult son Richard and his wife. Porter himself captained his namesake, Porter, which he had built in 1824 and which had been strengthened so that it would be fit for the hazardous voyage. Upon arrival, he used this vessel to set up a shipping service from Port Lincoln and Adelaide to and from other Australian ports. Porter also built Dorset in 1838, specifically as a back-up ship for the journey to Australia. This he sold upon arrival. Porter's expedition arrived at Adelaide in early 1839. A special survey was authorised by the Governor for Port Lincoln on the Eyre Peninsula and Porter was an investor in the survey company that took out the licence. He received land there as a consequence. The Porter moved the family to this new settlement in 1839. The Dorset by now in other ownership brought other settlers. The party was just one of three to arrive with settlers for the district in the 1830s and 1840s. It became apparent to him that Adelaide would be the main settlement in South Australia and that immediate prospects for Port Lincoln would be limited. Impatient for success, he decided to forego the significant investment and effort he had made in the fledgling settlement. He abandoned the settlement in 1840. Although Porter's tenure in Port Lincoln only lasted 18 months, he had, nevertheless, been appointed the first Magistrate of the Eyre Peninsula and his family left its name at 'Porter Bay'.
In May 1841, Porter arrived in Auckland, New Zealand. He built a house and store on Auckland's waterfront and commenced trading from there with stock brought on the Porter. He also invested in land in and around Auckland and bought interests in land claims from before 1840. Later he developed a farm at Kohimarama. In 1841 Governor Willam Hobson appointed Porter to his first Legislative Council, a small body with only an advisory role. Here Porter was closely involved in early attempts to deal with land claims from before 1840, a central issue in the early governance of New Zealand. Porter served in the 1st New Zealand Parliament as representative for the Suburbs of Auckland electorate from to 1855, when he retired, but did not serve in any further Parliaments. He also served on the Auckland Provincial Council. He was on the first Council of the Auckland Museum. Porter died on 30 March 1869 at Mangatangi, Waikato.