albertgd/legal-divorce-es

Spanish Constitutional Court — Divorce & Family Law Cases

A curated dataset of 168 rulings from the Spanish Constitutional Court (Tribunal Constitucional de España) related to divorce, separation, and family law proceedings. Each record contains the full anonymised case text, structured legal sections, and agent-ready distilled learnings — designed for building RAG pipelines and fine-tuning legal AI assistants in Spanish.

Dataset Details

Source

Cases retrieved from the official HJ search engine of the Tribunal Constitucional de España. All source documents are public legal records.

Coverage

Attribute	Value
Total cases	168
Decision type — SENTENCIA	97
Decision type — AUTO	71
Date range	1986 – present
Language	Spanish (es)
Size	~3.8 MB (JSONL)

PII Handling

All personal names of private individuals have been anonymised using Microsoft Presidio with the es_core_news_lg spaCy model:

• Person names → [PERSONA_1], [PERSONA_2], … (numbered consistently within each document so the narrative remains coherent)
• DNI / NIE → [DNI] / [NIE]
• Phone numbers → [TELEFONO]
• Email addresses → [EMAIL]

Court names, institutional parties, and judges are preserved as they are essential legal context and already part of the public record.

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Dataset Structure

Fields

Field	Type	Description
case_id	string	Internal identifier, e.g. CASO_11051
title	string	Full official title of the ruling
ecli	string	European Case Law Identifier, e.g. ECLI:ES:TC:1986:1031A
url	string	Source URL on the Tribunal Constitucional website
referencia	string	Short reference, e.g. AUTO 1031/1986
tipo	string	SENTENCIA (judgment) or AUTO (court order)
fecha	string	Date of the ruling in Spanish long form
hechos	string	Facts / antecedents section (anonymised)
doctrina	string	Legal doctrine and reasoning section (anonymised)
fallo	string	Operative part / ruling (anonymised)
sintesis	string	Official descriptive and analytical synthesis
learnings	string	Agent-ready distilled learnings: key doctrine, takeaways, and practical notes
text	string	Full composite text combining all sections — ready for embedding or fine-tuning

Example Record

{
  "case_id": "CASO_1201",
  "title": "Sala Segunda. SENTENCIA 260/1988, de 22 de diciembre",
  "ecli": "ECLI:ES:TC:1988:260",
  "tipo": "SENTENCIA",
  "fecha": "22 de diciembre de 1988",
  "hechos": "El Procurador de los Tribunales don [PERSONA_3], en nombre de doña [PERSONA_2], interpone recurso de amparo...",
  "learnings": "## Doctrina que se fija\n- La Disposición adicional décima de la Ley 30/1981...",
  "text": "# Sala Segunda. SENTENCIA 260/1988...\n\n## Hechos\n..."
}

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Usage

Load the dataset

from datasets import load_dataset

ds = load_dataset("albertgd/legal-divorce-es")
print(ds["train"])

RAG pipeline (embed + retrieve)

from datasets import load_dataset
from sentence_transformers import SentenceTransformer
import numpy as np

ds = load_dataset("albertgd/legal-divorce-es", split="train")
model = SentenceTransformer("sentence-transformers/paraphrase-multilingual-mpnet-base-v2")

embeddings = model.encode(ds["text"], show_progress_bar=True)

# Query
query = "¿Cuándo puede modificarse una pensión compensatoria tras el divorcio?"
q_emb = model.encode([query])
scores = np.dot(embeddings, q_emb.T).squeeze()
top_idx = scores.argsort()[-3:][::-1]

for i in top_idx:
    print(ds[int(i)]["title"])
    print(ds[int(i)]["learnings"][:300])
    print()

Fine-tuning (instruction format)

from datasets import load_dataset

ds = load_dataset("albertgd/legal-divorce-es", split="train")

def to_instruction(example):
    return {
        "prompt": f"Analiza el siguiente caso legal español y extrae los aprendizajes clave:\n\n{example['text']}",
        "response": example["learnings"]
    }

ft_ds = ds.map(to_instruction)

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Legal Context

The Tribunal Constitucional de España is Spain's supreme interpreter of the Constitution. It handles:

• Recurso de amparo — constitutional protection appeals by individuals against violations of fundamental rights
• Cuestiones de inconstitucionalidad — questions of unconstitutionality raised by courts

In the context of divorce law, these cases primarily concern:

• Application of Ley 30/1981 (divorce reform) — retroactivity, transitional provisions
• Art. 14 CE — equality / non-discrimination in family settlements
• Art. 24 CE — right to effective judicial protection
• Enforcement of foreign divorce judgments (exequátur)
• Pension and property disputes in separation / divorce proceedings

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Citation

If you use this dataset, please cite the source:

@dataset{albertgd_legal_divorce_es_2026,
  author    = {albertgd},
  title     = {Spanish Constitutional Court — Divorce \& Family Law Cases},
  year      = {2026},
  publisher = {Hugging Face},
  url       = {https://huggingface.co/datasets/albertgd/legal-divorce-es},
  note      = {Cases sourced from the Tribunal Constitucional de España (hj.tribunalconstitucional.es). PII anonymised with Microsoft Presidio.}
}

Original case texts: © Tribunal Constitucional de España — public records, freely accessible at hj.tribunalconstitucional.es.

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License

CC BY 4.0 — you may share and adapt the dataset with attribution.