I think it was Ann Ashley who pointed out the legal position of women deteriorated steadily from 1765 until the early 20th C as Manx laws were anglised (under English law married women were effectively chattels of their husbands).
Didn't English law had a fast track scheme for small estates (under £5) from late 18th C ? - you can see more and more 'rubber stamping' in courts for small estates post 1820 - likewise there appeared to be much less insistence on provision for children than in previous centuries which coupled with rise in number of non-landed poor as more moved off the land into the towns meant that many had little to leave - also more of the clergy were non-Manx as 19th c developed and one Bishop is on record that he had no interest sitting in court judging disputes over wills etc.