Dykes Alexander (1724 – 10 April 1786, Needham Market) was a Suffolk banker active in the Quaker congregation there.
[1] He founded the bank Alexander & Co. in Needham Market in 1744.
Dykes married Martha Biddle on 18 December, 1747 in Kingston upon Thames.
She became a Quaker minister in about 1750 and remained active as such until her death in 1775.
She was the daughter of John and Abigail Biddle, Quakers in Esher, Surrey.