The 1891 census has John James living with Thomas and his family at 21 Murray Road in Douglas so from that:-

Their parents are Edward Kewish and Frances Shimmin- see 1881 census at Ballagawne Farm Braddan.

Eliza Jane belongs to Matthias Corran and Jane Skillicorn.

As suggested the marriage certificate would be useful.

I noticed in the 1911 census Thomas and his family moved across the Mersey to Birkenkead where more children were born- one died young. As a joiner he may have worked at Cammell Lairds Shipyard.

Len Faragher