The White Spider of Savignac
V.L. Smith, Richard Savage

Twice-widowed Mellisande, however, is in no mood for a third marriage. Far from the demure chatelaine John expects, she is an expert vintner and herbalist – skills her people, and the local bishop, suspect she used to murder her two previous husbands.
As John’s disciplined soldiers clash with the unruly local people, and relations with his wife grow colder, John begins to wonder if the tales told of her are true. Will he be Mellisande’s next victim?