I'm sorry to say that I can find no connection in the data I have to your Brass's from Richmond.They are not part of my own tree.However, I do have a copy of one tree that originates in Richmond that was researched by Jim Brass of Derbyshire, the Brass One Name expert - now sadly deceased.
Data is as follows:
Richard Brass m. E.Whitlock 1726, Richmond son Robert(A)b. 1729 Richmond
Robert Brass (A) sons A1 Robert (B) b 1760, m. Barbara Watson 1784 Richmond Barbara Watson d. 1794/97 m. Mary Whittaker 1797. A2 John b 1762 Richmond
Robert Brass (B) & Barbara Watson children B1 Robert bp. 17/3/1785 Richmond B2 Barbara bp. 13/10/1787 Richmond. m. James Caygill26/11/1810 Richmond B3 John bp. 12/1/1790 Richmond B4 William bp. 28/3/1794 Richmondd. 1861 Houghton m. Elizabeth (Elizabeth d. Houghton 1848)
Robert Brass (B) & Mary Whitaker Children B4 Ann bp. 23/3/1798 Richmond B5 George bp. 12/1/1806 Richmond B6 Isabella bp. 16/6/1808 Richmond B7 Ann bp.17/7/1809 Richmond
William Brass (B4)& Elizabeth children B41 Hiram bp. 9/5/1830 Low Row, Swaledale d. 1/7/1894 Easington Colliery m. Deborah 1852 Bedale B42 Aaron bp.21/6/1833 Low Row, Swaledale m. ? 1869 Sunderland
George Brass 1761 - 9/6/1827 m. Jane Tutin 17/12/1784 (Jane d. 12/12/1832) children Geo 1784 Mary 1788 Jane 1795 John 1789 Tomasin 1792