I am drawing a blank and need more information about these two boys. They are listed on a 1911 census form.

Clifford Johnson was listed as age 8 and Norman Johnson aged 6 in 1911.

Both were born in Stockton on Tees and resident in Thornaby in 45 Lanehouse Road at the time of the census.

Their full brother was Leonard, age 7. Their father was Robert Gibson Johnson and their mother was Elizabeth.

Their half siblings were Bertha, Herbert, and Robert, from their father's previous marriage to Amelia Turnbull.

I need to find out what age they died, if they ever married, and if either of them had children. So far I haven't found any records to help.