Hundreds of people have left their condolences on a special Facebook page set up in tribute to the family that died in a head-on collision near Grimsby.
More than 33,940 people joined the R.I.P Cockburn Family page on the social networking site within a few hours.
One person posted, "So so sad xx dancing with the angels now x R.I.P xxx".
Another left a message that read, "Dance in heaven beautiful angels x".
Many left anecdotes about the family on the page, with one describing Mr Cockburn as "a gentle kind man" who was "totally devoted to his family".
A number of people also posted tributes on Bethany Cockburn's personal Facebook page, on which she described daughter Lacie as "Our world!".
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Gary Davies, 50, is believed to have known the victim, 56.
The couple, married for more than half a century, had recently retired to Mount Pleasant.
Four EU countries in eastern Europe refused to take part in the meeting