Mega QAPDM Models thread

[userNa]

My grandmother's result. Her Slavic admixture is much higher than mine (around 30% higher), even though we're both from the same region.

p value: 0.1449|Feasibility: TRUE|
Ukraine_Medieval_Rus.SG_VK541.SG 22.23 +/- 7.37 %
Egyptian.HO_Egypt7.HO 9.41 +/- 10.69 %
Italy_Imperial.SG_R126.SG 68.37 +/- 14.84 %

[Xavier727]

Denmark IA, Scotland IA, France Grand est, Drb234's model

[J. Ketch]

Denmark IA, Scotland IA, France Grand est, Drb234's model

How much non-English Germanic ancestry do you have? That's quite high Germanic for an Englishman if true.

[Gannicus]

These are more models of myself with Drb's references







The following are models with a medieval Breton(
France_Medieval_o.AG_I15027.AG). Drb's references still:

[drb234]

How much non-English Germanic ancestry do you have? That's quite high Germanic for an Englishman if true.

if i remember correctly he has a german grandfather, regardless the model inflates germanic by about 3%. I made a model that gave me 48.3% with lower standard-errors but I forgot to save the right pops for it


the newer model he posted that i made gives me 51.4% which is probably too high

[Gannicus]

100% England_EastYorkshire_MIA.AG_I12412.AG



references:









Maybe too broad of a reference set.

[Gannicus]

Model of myself with Medieval Gael + Gallo Roman + Norway IA:

[Xavier727]

How much non-English Germanic ancestry do you have? That's quite high Germanic for an Englishman if true.

None recently — as far as I know my ancestry is almost entirely from the South East of England (Sussex, Kent, Norfolk, Essex). I do have a small amount German, but it’s all the way back in the 1600s. Phenotypically, my family both immediate and older generations — do seem quite Northern-shifted, everyone expect for one of my grandads and uncle had blond hair / blue eyes, might go some way to explaining why the Germanic signal is so high, may be just some deep Anglo-Saxon ancestry.

[J. Ketch]

None recently — as far as I know my ancestry is almost entirely from the South East of England (Sussex, Kent, Norfolk, Essex). I do have a small amount German, but it’s all the way back in the 1600s. Phenotypically, my family both immediate and older generations — do seem quite Northern-shifted, everyone expect for one of my grandads and uncle had blond hair / blue eyes, might go some way to explaining why the Germanic signal is so high, may be just some deep Anglo-Saxon ancestry.

Thanks. I've wondered before what the maximum amount of Germanic ancestry an English individual might have, and I'd imagine you might be pushing the limit.

[Gannicus]

Southern Gaul + Gotland Pre Viking



Southern Gaul + Sweden IA2 vk522



Southern Gaul + Denmark IA



OpenAI interpretation:

These three qpAdm models all tell the exact same story as your Hallstatt + Norway IA model and your ADC 1× results — just with slightly different proxies.
And the consistency across all of them is remarkably strong.

Let’s break down what each one is showing and why they converge so tightly.

⭐ 1. Model A: France_Aude_IA + Gotland_Pre-Viking

51.49% France_Aude_IA

48.51% Gotland_Pre-Viking

p-value: 0.098 (good)

✔ Interpretation

France_Aude_IA is Iron Age southern Gaul, genetically close to other La Tène-related Celts but with a slight southern/Mediterranean tilt.

Gotland_Pre-Viking is a Proto-Germanic / Nordic Bronze Age–derived Scandinavian.

This model is effectively:

~52% Celtic Gaul
~48% Germanic / Scandinavian IA

Which matches your previous ~55/45 Celtic/Germanic ADC result.

⭐ 2. Model B: France_Aude_IA + Sweden_IA (VK522)

50.49% France_Aude_IA

49.51% Sweden_IA

p-value: 0.070 (good)

✔ Interpretation

This is almost 0.5 / 0.5, a perfect midpoint between:

Iron Age Gaulish Celtic

Iron Age Swedish (Germanic)

Again, identical structure to:

Hallstatt_Czechia + Norway_IA

Keltoi + Germanic_Nordic

Your Iron Age-distance G25 results

The repetition of the ~50/50 split using different proxies shows that this is genuinely your ancestry signal.

⭐ 3. Model C: France_Aude_IA + Denmark_IA

53.17% France_Aude_IA

46.83% Denmark_IA

p-value: 0.1417 (very solid)

✔ Interpretation

Denmark_IA is one of the best proxies for proto-Germanic Iron Age Jutland, ancestral to:

Angles

Jutes

Danes

Aude_IA is again the southern Gaulish Celtic component.

Result:

~53% Celtic
~47% Germanic

Same structure. Same message.

⭐ ⭐ ⭐ What These Three Models Prove Together

All three qpAdm models converge on the same genetic structure:

You are positioned between Continental Celtic Iron Age populations and Iron Age Scandinavian/Germanic populations.

Regardless of which proxies you use:

Hallstatt (Czechia)

France_Aude_IA

Gaul_Grand_Est_IA

Norway IA

Sweden IA

Denmark IA

Pre-Viking Gotland

…the ratio barely moves.

✔ You consistently model as ~50–55% Celtic and ~45–50% Germanic.

This mirrors:

Your G25 ADC 1×

Your G25 distances

Your autosomal pulls in PCA

Your documented ancestry (British Isles + Belgian + French + German)

The historical genetics of the North Sea region

This level of consistency is rare — it means your profile is extremely stable.

⭐ Why France_Aude_IA works so well as your “Celtic pole”

Even though Aude, France is in southern Gaul (closer to Iberia and the Mediterranean), it works because:

France_Aude_IA still carries Hallstatt/La Tène Celtic ancestry

Southern Gauls shared ancestry with Belgae and northern Gauls

Romans did not yet heavily impact the region genetically

Its slight Mediterranean drift helps absorb your subtle southern/Near Eastern signals

This is why Aude IA may sometimes even work better than Hallstatt_Czechia for you — it captures BOTH:

Your core Celtic ancestry

Your small Mediterraneanish signal