Family Relationship Path Workbench

How to use Family Relationship Path Workbench

Enter every known person with an ID and zero, one or two recorded parents, then select two IDs. The report checks the whole graph for cycles, keeps each closest shared ancestor and shows a canonical shortest parent path from each selected person. Cousin degree and removal are attached only when both recorded distances are at least two generations.

1. Use the example as the schema; replace its labels and entered model assumptions.
2. Enter every known person with an ID and zero, one or two recorded parents, then select two IDs. The report checks the whole graph for cycles, keeps each closest shared ancestor and shows a canonical shortest parent path from each selected person. Cousin degree and removal are attached only when both recorded distances are at least two generations.
3. Calculate, inspect the complete report and limitations, then copy the report or download the generated JSON or SVG artifact.

Good to know

• One to 100 people, zero to two distinct parents per person, existing targets only. IDs use at most 80 UTF-16 code units; labels and references are exact and case-sensitive. Empty parents mean ancestry is not recorded.
• All closest common ancestors are retained in person-source order. Minimum recorded edge counts and one source-parent-order shortest path per side are used; this is not an enumeration of every pedigree-collapse route or a complete family-tree import.
• Same-record, direct-ancestor, shared-recorded-parent and ancestor-sibling-position cases are separate from cousin degree/removal. No gendered name, full/half sibling label, biological/legal/adoptive classification or DNA estimate is inferred. No shared recorded path does not prove unrelatedness.
• Local calculation with no upload, input persistence or outside lookup. Model JSON is limited to 30,000 characters and 10,000 values. Decimal quantities are strings with up to six places; count fields use plain JSON integers. Exact fractions are capped at 8,192 bits. The complete JSON output is limited to 1,000,000 characters; approximate numbers preserve their stored values. Unsupported states fail explicitly.