I have in my database that Manasah QUAY was ch 14 Aug 1836 Douglas
Father John Quay & Mother Lucy/Louisa CRAINE md
18 Oct 1829 Braddan

I imagine that Quay is like Quaye--sometimes an e, sometimes not

1841 Census Index
Douglas 8 29 151
QUAY
John 40
Louisa 40
Manassah 4
William 15

1851
Douglas 55 Sand Street
John Quay head married 50 labourer b Douglas
Louisa wife married 40 b Douglas
Manasah son 14 b Douglas
John son 6 b Douglas