the Manx milburns descend from Isaac - see manx annals #23 (on Manxnotebook) - 1821 April 27th.- "Died at Laxey on Saturday Isaac Milburn aged 72. Was 45 years in the Island, was a native of Cumberland and came to work at Laxey mines." (Several of his descendants are living in the Island).
his wife was Deborah Briden (hence recurring briden/bryden name in family)
his son issac born lonan Oct 1793 - the name is now only partially readabkle as []aac in the actual register - the day is not readable - he marriaed Cath kelly in 1815 - from hence first child John I think buried Braddan 18470228 age 31
Deborah was I think dau of Thomas Briden + jane hamilton - I can't find a marriage on island for them (neither name is Manx) thus I suspect they immigrated to Ramsey c. 1765 (where several descendants can be found) tho there are some earlier records of name