Question: The hometown of Dave Kershaw is located on the bank of what estuary?

Context paragraphs:
Cowes: Cowes ( ) is an English seaport town and civil parish on the Isle of Wight.  Cowes is located on the west bank of the estuary of the River Medina, facing the smaller town of East Cowes on the east bank.  The two towns are linked by the Cowes Floating Bridge, a chain ferry.

Torasi Estuary: Torasi Estuary is the estuary of Bensbach River, located at the southern end of the Indonesia-Papua New Guinea border.  It empties into the Arafura Sea.  The mouth of the estuary is administrated by Indonesia with Papua New Guinean ships given right of passage to pass the mouth.  There is an Indonesian Navy outpost at the west bank which also operates as a border control to regulate immigration between citizens of the two countries.

Grimsby: Grimsby, also known as Great Grimsby, is a large town and seaport in Lincolnshire, England, on the South Bank of the Humber Estuary close to where it reaches the North Sea.  It is the administrative centre of North East Lincolnshire.

Mittelrhein (wine region): Mittelrhein (or Middle Rhine) is a region ("Anbaugebiet") for quality wine in Germany, and is located along a 120 km stretch of river Rhine in the tourist portions of the Rhine region known as Middle Rhine.  On the left bank of Rhine, vineyards begin immediately downstream of the Nahe River estuary and last until Koblenz.  On the right bank, vineyards begin where Rheingau ends and last until 8 kilometers south of Bonn, in the Siebengebirge.  Parts of the Rhine Gorge, a UNESCO World Heritage since 2002, make up the southern part of Mittelrhein.

Blyth Power Station: Blyth Power Station (also known as Cambois Power Station) refers to a pair of now demolished coal-fired power stations, which were located on the Northumberland coast in North East England.  The two stations were built alongside each other on a site near Cambois in Northumberland, on the northern bank of the River Blyth, between its tidal estuary and the North Sea.  The stations took their name from the town of Blyth on the opposite bank of the estuary.  Blyth A Power Station was built and opened first but had a smaller generating capacity than its sister station, Blyth B Power Station, which was built to its west four years later.  The power stations' four large chimneys were a landmark of the Northumberland skyline for over 40 years; the A Station's two chimneys each stood at 140 m ; the B Station's two chimneys were taller, at 170 m each.

Roberts Bank: Roberts Bank is an undersea bank on the south side of the estuary of the Fraser River approximately 35 kilometers south of Vancouver, British Columbia, Canada.  Located between the South Arm of the Fraser River and Tsawwassen, it is significant as both a transport hub because of the Tsawwassen Ferry Terminal and port because of the Roberts Bank Superport, and as an area with important wetland habitat.  The term properly refers to the shallows offshore from the Superport and wetland.

Nahoon River: The Nahoon River (Xhosa: "Nxaruni" ) is situated in the city East London on the East Coast of South Africa.  It is to the east of the Buffalo River harbour, and is to the west of Gonubie River.  The suburb of Nahoon is on its west bank and Beacon Bay is on the east bank.  It flows through an estuary and Africa's southern most mangrove forest into the Indian Ocean.  Its mouth is located near Nahoon Reef which is a famous surfing spot and is also known for attacks by Great White Sharks.

Hryhorivsky Estuary: Hryhorivsky Estuary, or Small Adzhalyk Estuary (Ukrainian: Григорівський лиман, Малий Аджалицький лиман , Russian: Григорьевский лиман, Малый Аджалыцкий лиман , Turkish: "Küçük Adcalik liman" ), is a brackish water area in South Ukraine, in 30 km to north-east from Odessa.  In the lower part of the estuary (left bank) the Port Yuzhny is located.  The estuary connected with the sea by the navigation canal 3 km length and 14 m depth.

Dave Kershaw: Dave Kershaw (born 18 October 1955) is a Shotokan karateka from Grimsby, Lincolnshire.  He was an international competitor, representing Great Britain at European and World Championships between 1982 and 1998, and was British Kata Champion (Shotokan Karate International of Great Britain) for a record six consecutive years, from 1987 to 1992.  He is a senior SKI (GB) Instructor and Examiner.

Federal Dam (Troy): The Federal Dam is a manmade dam built across the Hudson River in the U.S. state of New York from Troy on the east bank to Green Island on the west bank.  The major function of the dam is to improve navigability.  It is located at mile 153 of the Hudson River, measuring from the beginning of the Hudson as a Federally Navigable Waterway near the Battery in Manhattan.  The location of the dam marks the northern end of the Hudson River estuary.

Supporting paragraphs: Dave Kershaw Grimsby
Answer: Humber Estuary