I am not sure if the Allen who died in 1830 is connected to our Allen. Could be a name coincidence and same village. The one who died at Wimbish Hall in 1830 was born about 1745.
Richard Taylor was born in 1759 in Barkway, Herts. The Taylors seems to flit between Barkway and Saffron Walden as a 1773 poor law record mentions them. Samuel, wife Elizabeth, children Sarah, 18, Ann 14 and Richard.
Samuel Taylor wed Elizabeth Cooper in 1746 in Barkway.
Children was
Samuel born 1747, Barkway, m Ann Stock, 1766, Saffron Walden.
Sarah born 1755, Saffron Walden.
Ann born c1757.
Richard born 1759, Barkway, m Mary Stock, 1780, Saffron Walden.
John Taylor born 1764, Barkway, died 1764, Barkway.