Kelly Clarkson’s ex-husband, Brandon Blackstock, reportedly spent the last few months of his life at his $1.8 million Montana Ranch while silently battling cancer.

“Brandon lived a pretty quiet life in Montana. That was how he liked it,” an insider told Us Weekly Saturday.

“Even though he worked in entertainment in the past, that was not his personality. He was at home in Montana.”

“He had his ranch and rodeo, but he preferred to go under the radar,” the insider explained.

“Some of the people who worked with him at Starstruck [Entertainment] ended up moving to Montana to work on the rodeo with him.”

Blackstock, who was 48 when he passed away, was already at his countryside home when his health “took a very bad turn” earlier this year, per the source.

The insider explained that the

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