A family member of the two women and three children who died in the blaze said he had only just seen the two boys at the weekend and that they were "happy, energetic boys."
Cousin Ishfaq Hussain Kayani spoke to Dom Reynolds at Channel 5 after a grandmother, aunt, two children and a nine-week-old baby died at Wake Road in the Sharrow area of the city.
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A humid night for some with thundery downpours in places.
The 20-year-old was found fatally wounded on Roth Walk, near Finsbury Park, north London at around 3am on Saturday, Scotland Yard said.
Daniel Cowell has been jailed for five years and four months after ramming a police patrol car with a stolen transit van.