Judith Merkle Riley’s books are terrific. Her trilogy, which starts with A Vision of Light, is very loosely based on the life of Margery Kempe.
Christie Dickason writes excellent historical novels, I like The Lady Tree best I think.
Diana Norman is hard to come by now, but keep an eye out for her if you like second-hand bookshops. In particular I recommend The Pirate Queen, but all her books are good.
If you like a bit of mystery with your history, Ellis Peter’s Cadfael novels are enjoyable, and under her real name, Edith Pargeter she writes more straightforward historical fiction.
There are a lot of writers doing historical mystery, if that’s a genre you enjoy I can suggest a list for you.
Robert Neill is a really old fashioned writer now, but his book about the Pendle witches, Mist Over Pendle is a favourite of mine.
I enjoyed the first book of Sara Donati’s American history books - she writes door stoppers, so I kind of ran out of steam, but don’t let my short attention span put you off.
I absolutely second the wonderful Dorothy Dunnett, she’s a genius of a writer.
Lots of people enjoy Phillipa Gregory, so she’s worth a try. Victoria Holt wrote in the same vein some forty years ago, only shorter. 