Lady Isabella Margaret, Countess of Fife, and Angus, Heiress of Hokettle MacDuff - husbands of Isabella Margaret Stewart (MacDuff), Countess of Fife

hello, i am having some problems understanding some of the information on this profile, first it shows margaret with 2 fathers which is correct sir donnchadh duncan or was it angus macduff, next i try to check all facts before i include in my database, wikipedia has her 4 husbands listed, with one difference, this profile has her listed as being married to sir robert stewart, wikipedia has her married to a walter stewart, i would be very grateful for any help clearing up these issues, thank you thomas young,