Mrs Marsh, who previously worked at a racecourse, died hours after the visit in the early hours of Tuesday.
The grandmother had already been granted a visit by her pet dogs but told hospital staff she especially wanted to see Bronwen, who she had raised from a foal for 25 years, ITV News reported.
Her daughter, Tina, thanked everyone at the hospital for making the time before she succumbed to cancer "ever so special".
"It took a lot for mum to talk on her last day but she clearly called Bronwen's name and asked for a kiss," she told the Wigan Evening Post. "There were lots of fantastic nurses that cared for my mum as if she was their mum."
- Independent