Hi, Bernard
I haven't solved the mystery of Charles and Catherine either. Haven't found them in burials for Braddan or Douglas.

I wonder if this might be Catherine Moore?
1881 Braddan Census
Braddan MOORE Robert Kewaigue Head M 50 Stone Breaker (Rd Lab) Patrick IoM
Braddan MOORE Christian Kewaigue Wife M 45 Stone Breakers Wife Marown IoM
Braddan MOORE Matthew H. Kewaigue Son U 20 Dyer Braddan IoM
Braddan MOORE Sarah Kewaigue Daur - 14 --- Braddan IoM
Braddan MOORE John Kewaigue Son - 11 Scholar Braddan IoM
Braddan MOORE Mary J. Kewaigue Daur - 7 Scholar Braddan IoM
Braddan MOORE Catherine Kewaigue Daur - 6 Scholar Braddan IoM

If so, the parents are Robert Moore and Christian Gelling who md 24 DEC 1859 Braddan

I found an Arbory burial for Thomas Wade who might be Charles' father Thomas who was b 1854
Arbory Burial Record
Thomas Wade Douglas 42 buried 23 Jun 1897

Let me know if you figure out this mystery.
Regards,
Donna