Aufrica / Affrica Of Fife - Inconsistencies

cf Duncan MacDuff, 4th Earl of FIfe

Adam, post links to your sources

HARALD Maddadsson, son of MADDAD [Madach] Earl of Atholl & his second wife Margaret of Orkney (1134-1206[993])....

m firstly (repudiated [1154/55]%29 AFREKA, daughter of [DUNCAN Earl of Fife & his wife ---]. Orkneyinga Saga records that Earl Harald married “a woman called Afreka”[997]. Balfour Paul’s Scots Peerage states that she was the daughter of Duncan Earl of Fife but cites no primary source apart from the Orkneyinga Saga, as shown previously which does not state the parentage of Jarl Harald’s wife[998]. The primary source which confirms her parentage has not yet been identified. https://fmg.ac/Projects/MedLands/SCOTTISH%20NOBILITY.htm#HaraldIIMa...

7. JOHN (-murdered Thurso 1231). Orkneyinga Saga names (in order) “Thorfinn, David, Jon, Gunnhild, Herborga and Langlif” as the children of Earl Harald and his second wife[1010]. The Icelandic Annals record the death in 1206 of "Haraldus, Maddadi filius, comes Orcadum, et Gisur Halli filius" and the succession of "comites…David et Johannes"[1011]. He divided Orkney with his brother David 1206, invested as Jarl of Orkney after 1210 by Inge II Bardsson King of Norway. Sole Jarl from the death of his brother in 1214. John of Fordun’s Scotichronicon (Continuator) records that "comes Cathaniæ" was regranted his lands by King Alexander II in 1222 after payment, following their confiscation for his involvement in the burning and killing of Adam Bishop of Caithness in his cathedral[1012]. The Icelandic Annals record that "Iohannes Orcadum comitis" was killed in 1231[1013]. He was murdered by Snaekoll Gunnisson, nephew of Harald III "Ungi" Jarl of Norway, and his body burned in retaliation for the death of the Bishop[1014]. m ---. The name of John’s wife is not known. John & his wife had [two] children:

a) HARALD (-drowned 1226). His father left him as hostage at Bergen 1224 with Hakon Hakonsson King of Norway. The Icelandic Annals record that "Haraldus Johannis filius comes Orcadum" was drowned in 1226[1015].

b) [JOAN . According to the Complete Peerage, Joan wife of Freskin of Moray was "possibly…daughter and heiress of Earl John"[1016]. Skene says that "the probability is that…half [of the earldom of Caithness]" was inherited by the Moray family from "Johanna…as indicated by her name, the daughter of John Earl of Caithness of the line of Paul"[1017]. Neither source cites any primary source which confirms Joan’s parentage, which presumably is just speculative. She was taken hostage by Alexander II King of Scotland in [Aug 1214 or 1222]. A charter dated 1269 confirmed a donation to the church of Moray by "domino Reginaldo le Chen minori domino de Duffus et Marie sponse sue filie quondam Friskyni de Moravia" and named "domina Johanna quondam sponsa domini Friskyni de Moravia"[1018]. m FRESKIN of Moray Lord of Duffus, son of ---. He appears to have taken control of part of Caithness after the murder of Earl John in 1231[1019].] https://fmg.ac/Projects/MedLands/SCOTTISH%20NOBILITY.htm#HaraldIIMa...

cf Jon Haraldsson, Jarl of Orkney

GILLIEMATHIL [Gilliemichael] Macduff, son of --- (-before [1135]). Earl [of Fife]. "…Gillemichel Mac duf…" witnessed a charter dated to [1128] by which "David…Rex Scottorum" made grants to the church of Dunfermline[288]. "Gillemichel comite…" witnessed a charter dated to [1130] by which "David…Rex Scottorum" made grants to the monks of Dunfermline[289]. m ---. The name of Gilliemathil’s wife is not known. Gilliemathil & his wife had [three] children:
a) [DUNCAN (-1154).
b) HUGH .
c) ETE Macduff (-after 1132).

https://fmg.ac/Projects/MedLands/SCOTTISH%20NOBILITY.htm#DuncanFife...

cf Gille Míchéil MacDuff, Earl of Fife

3 people married somebody by the name Aufrica MacDuff of Fife.

Which 3?
Without sources the most likely answer is that there's an error.

Without documents, that's just join the dots, Adam. Everybody can do that in a different way - it has no link to reality if not backed up with historical data from the time.

The Aufrica who is the daughter of Duncan also has a brother called Duncan (after his father, unsurprisingly) They are the same person.
cf Aufrica
http://fmg.ac/Projects/MedLands/SCOTTISH%20NOBILITY.htm#AfrekaMHara...

This profile Aufrica appears to be another version of the same woman with an additional husband - based on a Discussion here:

https://soc.genealogy.medieval.narkive.com/tjGWQJOl/the-earls-of-ca...  which appears to me to be insufficiently sourced to confirm. 

is it possible that somebody simply "invented" the younger Aufrica of Fife, marrying her to the son of Haraldur Maddadsson in a partial attempt to explain the incomplete and conflicting information?

Adam - read above - the source for her marriage is the Orkneying Saga. Balfour Paul places her as Duncan Earl of Fife's daughter, but without a primary source.

On Aufrica if you or anyone else can track down the provenance of the sources mentioned in the conversation they are citing as proof, we'd be able to make a judgement on how primary they are.

On dates for people we are unsure existed - if we genuinely had those, we'd be in possession of far better primary source evidence than is being given to validate either.

On Kenneth - start a Discussion from his profile, but you'll need to actually do research in the area to hold it. Genealogy is, by necessity, about proof not conjecture. We don't invent profiles to link two people we feel should be linked because, on a collective tree especially, those bogus profiles mess up everyone else's lines too.

Yes, that's true.
The rest, as far as I can see, is not even tertiary.