Germany citizenship through a great-great-grandparent
Section 4 descent has no fixed generational limit, so this depth is not automatically closed the way the UK or Spain would close it — but four generations of unbroken proof is a genuinely heavy undertaking under the ordinary rule. Section 15 restitution remains the more realistic route if the persecution-era ancestor sits at this generation.
Same no-fixed-cap rule as at any depth, but four links means four independent naturalisation-date checks, plus the historical sex-discrimination-era gaps, all of which have to clear.
If the persecution-era ancestor in your family sits this far back — a plausible fit for the 1933–1945 window depending on generation length — Section 15 restitution is usually the more tractable route, since it has no generational limit and isn't defeated by a later foreign naturalisation.
Work out whether the persecution-era ancestor in your family actually sits at this generation or a nearer one — that changes which route is realistic.
For ordinary descent at this depth, a negative naturalisation-record search at any one generation ends the question early — check the weakest link first, not the oldest record.
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