---
title: "Hall nee Byrne - Mary Margaret — Ownership Dossier"
canonical: https://whiteintel.dev/entity/29fc0de1-0a54-5747-8862-e2883c98ac93
json: https://whiteintel.dev/api/public/dossier/29fc0de1-0a54-5747-8862-e2883c98ac93
identifier: icij:icijol-80061626
jurisdiction: IE
risk: Low
source: WhiteIntel corporate-ownership graph
---

# Hall nee Byrne - Mary Margaret

**Type:** Organization  
**Jurisdiction:** IE  
**Identifier:** `icij:icijol-80061626`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/29fc0de1-0a54-5747-8862-e2883c98ac93  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/29fc0de1-0a54-5747-8862-e2883c98ac93  

## Ownership & control

### Holdings / subsidiaries

- **Millais House Limited** (shareholder of) — https://whiteintel.dev/entity/1355c0f1-1940-5a79-b870-311205d4b6c0
- **Castle Quay Parking Limited** (shareholder of) — https://whiteintel.dev/entity/748b8f97-6497-5647-90b8-69400fd40a31

## Provenance

- ICIJ Offshore Leaks — https://offshoreleaks.icij.org/nodes/80061626

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Hall nee Byrne - Mary Margaret**. Human view: https://whiteintel.dev/entity/29fc0de1-0a54-5747-8862-e2883c98ac93 · Structured JSON: https://whiteintel.dev/api/public/dossier/29fc0de1-0a54-5747-8862-e2883c98ac93._

_Risk levels are heuristic investigative leads, not legal determinations of beneficial ownership. Every claim carries a source; an absent edge means "not yet observed in current sources", not "does not exist"._