Am just putting up some of this old article which outlines details re SWs time in Farnham with NJ.
I cannot see any information that says the elder child lived in NAG at that time.
When the boiler at Sarah's Portsmouth home broke, Neil invited her and her three children to stay for Christmas until it could be fixed. 'Her daughter shared bunk beds with mine in one room, and
her sons and mine shared another room.
Sarah enrolled her children in the local school,
But there were stresses, too. Neil says Sarah's children were close to their father and missed their old friends back in Kent.
Although spacious, Neil's flat must have felt rather cramped with
five young children, who were now part of an instant blended family, and no garden to play in.
The speed with which Sarah and her children moved in with Neil — barely two months after they had met — also heightened disputes with her ex-partner over their children.
The strain and disruption of the to-ing and fro-ing between Kent, Farnham and Portsmouth eventually took its toll.
After almost 18 months together, Sarah suddenly left Neil in May 2018, apparently without warning.
'One morning I had a call at work from the children's school asking where they were. I phoned Sarah and she told me she'd gone. She said she couldn't cope with the situation any more,' says Neil.
'I was heartbroken, but Sarah felt she had to put the children first. She was very stressed over the situation with her ex, and worried that she could lose her kids, and they meant everything to her.'
Sarah Wellgreen's partner still baffled how mother-of-five vanished | Daily Mail Online