I only just saw your message about Henry Burden of almost 30 months ago. If you are still looking I have quite a bit of info on him and his descendants (I being one of them). The basics are as follows (as best I have been able to discover).
He married Mary Blandy in 1774 and they had 13 children before her relatively early death: Ann (1775-1775); Mary Samler (1775-1840, married but no children); Charles (1776-1856, married twice but no children); William (1777-1777); Henry (1777-1808, married with 2 sons, one of them posthumous); George (1778-1778); George Salmon (1780-1781); Daniel Walter (1782-1847, married twice, with 4 sons and 8 daughters); Elizabeth (1783-1862, married with 2 sons and 4 daughters); Jennet (1784-1828, my ancestor, married with 6 sons and 6 daughters); George (1787-1850, married twice, with 2 sons and 4 daughters); Martha (1788-1833); and Annie (1790-1847, married with 1 daughter). Sarah Ansell was his second wife: they had no children.
If you respond to this I can provide more about him and most of his children.