A man whose brother, sister-in-law and two nieces were killed in a crash in Yorkshire has said his heart is "ripped into a million pieces".
The family's other daughter was not in the car, according to the fundraising page.
A motorcyclist and their pillion were also killed in Sunday's incident, and police said all six died at the scene - on the A61 between Wakefield and Barnsley.
Callum Roller posted a tribute on Facebook to his "amazing brother" Shane Roller, sister-in-law Shannen Morgan and nieces Lillie and Rubie.
"I'm absolutely heartbroken I'm gonna miss all of you!" he wrote.
"It's absolutely broken my heart and it's absolutely broke both side of families!
"You all had a heart of gold and gonna miss you all like crazy! My heart goes out to shannens side of family and mine! We are all in absolute shock."
"My heart is ripped into a million pieces!!!" he added.
The family were travelling in a Ford Focus when the crash occurred just before 4pm.
Superintendent Alan Travis called it an "absolutely tragic incident", but police have not said how it happened and want any witnesses to contact them.
Crash investigators were still at the scene on Monday afternoon and the road remained closed.
Sky's Fraser Maude said the speed limit there was 40mph but that locals told him people often drive faster.
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