Since this story was published, Henry Darvell has sadly passed away. Alex and Mark have given their permission for Mamamia to continue sharing Henry's story.
Life for Alex and Mark with their four kids was blissfully chaotic.
"Every day was a madhouse," Mark told Mamamia.
"Two girls growing up, running around, starting prep, ending kindy, and a little man who was just turning two and tearing the house up, climbing our benches, stealing our food out of the pantry, and just running amuck. It was a madhouse, but it was great."
Add to that a young baby, and careers to juggle, and you’re looking at a pretty typical picture of young family life.
That was until a day at the park in 2022 that shattered their world as they knew it.