the marr of Wm Harrision to Bridson states WH Douglas and in fact they had a large family there - I suspect he is the WH buried in Douglas St Georges in 1829 and it might well be worth checking for a MI as most buried there would have one. However why would his dau marry a young ag lab in Kentraugh in Arbory - miles away from Douglas (remember manx miles are like dog years 7x the length elsewhere.

There are 3 Richard farghers in 1841c + 1851c all aged 49/50 in 1851 but there would appear to be insufficient baptisms to go round from the IGI! (I havn't checked bapts in this period yet against the actual regs) - however your Richard in 1851 and again in 1881 states birth parish was Rushen - whilst Rushen and Patrick are adjacent it seems strange