Jon Dollery
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jrdollery.bsky.social
Jon Dollery
@jrdollery.bsky.social
Mapping Officer @rcahmwales.bsky.social | Landscape Archaeology | Historical GIS | Historical Cartography | FRGS | Board Game Enthusiast | Proud Cat Dad 🐱
👏📣🥁!!!JOB CLAXON ALERT!!!🥁📣👏

RCAHMW (@rcahmwales.bsky.social) are recruiting x2 Georeferencing Assistant Posts who will be working with yours truly to make some fantastic old maps publicly available. For more information, see the link below:

rcahmw.gov.uk/about-us/wor...
RCAHMW | Working for the Commission | Current Vacancies
rcahmw.gov.uk
June 24, 2025 at 10:14 AM
Hello All. It's been a while since my last post as I've been working on several things. I've just completed the mapping of the medieval Commotes & Cantrefs of Wales which are now available on the Historical Boundaries of Wales website! historical-boundaries-of-wales-rcahmw.hub.arcgis.com
June 18, 2025 at 8:41 AM
Happy Friday Everyone! We've been working hard to recreate the historical townships of Wales from various historical sources and map.

The pre-1840 Township boundaries for Denbighshire, Flintshire, Montgomeryshire & Radnorshire are now available on the Historical Boundaries of Wales website!!!
April 25, 2025 at 9:35 AM
Happy Friday Everyone 🥳 Although I've been making some tweaks to the Historical Boundaries of Wales web map, I thought I'd have a play today with 3D web map, especially with the Anglesey 1st Edition 25inch OS Mapping with is available to view for free. Holyhead mountain in 1889 looks amazing in 3D!
April 11, 2025 at 9:10 AM
Hello All! I've been deliberately quiet for the past few months as I've been busily mapping historical boundaries of Wales from the 2nd Edition OS 6inch mapping (1889-1906). These are now live on the Historical Boundaries of Wales website! New boundaries include Civil Parishes & Poor Law Unions.
April 10, 2025 at 11:57 AM
Hello All.

Finally gotten over the backlog of e-mails and other bits and bobs. So today I can get back into the process of Georeferencing the 1st Edition 25" OS Maps, starting with the beautiful county of Flintshire. Haven't done this since Anglesey last year so looking forward to cracking on!
January 15, 2025 at 1:12 PM
Happy New Year! Back in work today. #MapMonday, I thought I'd share an image of a GIS finding aid I've been working on for North Wales. Each dot represents a aerial photo taken by the @ordnancesurvey.bsky.social between 1970-2009. There are 61,662 points on this map!!! And this is only N. Wales!
January 13, 2025 at 3:15 PM
Seasons Greetings from all the Staff at the Royal Commission who are out enjoying the festive mood this afternoon for our annual Christmas meal. Nadolig Llawen!
December 12, 2024 at 3:00 PM
Out of the office today in sunny Bristol at the Engineers House with the @mappingthemarch.bsky.social @latemedievalist.bsky.social team for a workshop and our Advisory Board meeting. Very nice location for it.
December 6, 2024 at 10:47 AM
Hello All.

Just thought I'd share this screen shot from #DeepMappingEstateArchives webmap of the Thomas Badeslade map created in 1740 for the Duke of Westminster showing their landholdings of the uplands of Denbighshire. Love that there are 'old shafts' indicated on this map, how old are they!?
December 4, 2024 at 11:47 AM
It's #MapMonday!

Today I'd thought I'd share with you the nuggets that historical maps can give us about the past, antiquities & in this case gruesome discoveries. The OS Town Plan of Mold c.1871 gives details of 'Human Skeletons Found' near Mold Castle.

You can view this on Deep Mapping Website!
December 2, 2024 at 11:08 AM
Something a bit different today.

I've been digitising the Ordnance Survey Aerial Imagery finding aids for Wales. I've been working on SJ (North Wales) & have done many sortie plots dating from 1970-2004. Only got a few more to do before finishing in 2009.

Each dot represents an Aerial Photo!
November 28, 2024 at 1:20 PM
The Royal Commission has funded the National Library of Wales to scan all of it's 1st Edition 25" OS mapping. The plan in the new year is to begin georeferencing them & make them freely available. We have made a start with Anglesey which you can view here:

rcahmw.maps.arcgis.com/apps/webappv...
November 27, 2024 at 11:47 AM
Shwmae All!

Continuing my quest to share some mapping info with you I thought I'd share our customer success story about the
#DeepMapping project that was produced by @EsriUK a few weeks ago. It's a great read & sums up everything about the project.

resource.esriuk.com/esri-resourc...
November 26, 2024 at 2:03 PM
It's #MapMonday! I thought I'd reshare the link to the Historical Boundaries of Wales website which launched a few weeks ago. Here you can explore a variety of 19th century boundaries such as Hundreds, Parishes, Townships & Municipal Wards.

historical-boundaries-of-wales-rcahmw.hub.arcgis.com
Historical Boundaries of Wales
Discover, analyze and download data from Historical Boundaries of Wales. Download in CSV, KML, Zip, GeoJSON, GeoTIFF or PNG. Find API links for GeoServices, WMS, and WFS. Analyze with charts and thema...
historical-boundaries-of-wales-rcahmw.hub.arcgis.com
November 25, 2024 at 11:45 AM
Hello All.

Just thought I'd share a link for blog I wrote for Royal Commission Wales about the Launching of the Historical Boundaries of Wales website. This outlines the need / challenges of mapping historical boundaries from the 19th Century. Please do have a read.

rcahmw.gov.uk/launch-of-th...
RCAHMW | Launch of the Historical Boundaries of Wales website
rcahmw.gov.uk
November 23, 2024 at 8:31 AM
Hello All.

Hope you are all well on this Friday and looking forward to the Weekend.

Just thought I'd share with you that the #DeepMappingEstateArchives web mapping has been updated and now includes 3D mapping!!! You can explore the mapping here: deep-mapping-estate-archives-rcahmw.hub.arcgis.com
November 22, 2024 at 1:15 PM