Ballinger

Hello,
How do I go about researching a lost relative? I’ve been doing my husband’s family tree from the UK.
I have found this relative in the 1891 Census and then he fell off the radar.
The only reason why I am pointing in this direction is because of a UK incoming passenger list from South Africa.
Any information on how to find him would be appreciated.
Is there a website that has queries for family’s researching their ancestors?

Thank you,
Shelley Ballinger
seashell635@gmail.com