On 10 April 1769, he married Isabella Wakefield (1752–1769), the daughter of Edward and Isabella Wakefield, from an old
Westmorland Quaker family. She died of fever on 17 November 1769, aged 17. On 23 September 1773, Bevan married Louisa Kendall (1748–1838), the daughter of Henry Kendall, a banker, of
Lincoln's Inn Fields. They had seven sons. On marrying a non-Quaker, he was expelled from the Society of Friends. In 1783 he bought
Swallowfield Park in
Berkshire, from
John Dodd for £20,000, and then sold the house in about 1788. In 1789 he bought
Riddlesworth Hall. In 1814 he moved to
Fosbury House, Hungerford, Wiltshire. He also had houses at 31
Gloucester Place, London and Collingwood House, 127 Marine Parade,
Brighton. Silvanus and Louisa Bevan had seven children: •
David Bevan (1774–1846)., married Favell Bourke Lee (1780–1841) • Henry Bevan (1776–1860), married Harriet Droz (1783–1852). • Rev. Frederick Stephen Bevan (1779–1859), married Ann Elizabeth Buxton (1782–1848). • Charles Bevan (1781–1832), married Mary Johnstone (1789–1854). • Rev. George Bevan (1782–1819), married Anne Buchanan (1782–1831). • Robert Bevan (1784–1854), married Mary Peele Taylor (1786–1853). •
Richard Bevan (1788–1870), married Charlotte Hunter (1801–1835) then Sarah Dewar (−1883). He was a banker based in
Brighton. He died in 1830. ==References==