I had never heard of these before and it was only by chance that I verheard one of the church ladies talking about them to another visitor.
I now know that in Medieval times 12 crosses were either etched or painted at various points around a church when it was first consecrated, and anointed with holy oil during the ceremony. There were 12 crosses for the 12 apostles, whose support was needed to maintain the church.
The two at Tewskesbury are very tiny, and easily missed. As you leave the abbey, look to your right just above eye level. They are carved into the stone of the doorway.
Medieval masons all had their own way of marking the stones they worked.
It's not unusual to see them in our ancient cathedrals and religious buildings, but you have to know what to look for.
From the Norman (1066 >) period onwards masons chose any mark they fancied to identify their work, and these marks were often passed down through the family.
Tewkesbury Abbey, very helpfully, has an information sign on one of the pillars (near the entrance) which has several such marks at a low enough level to be seen. Many of them, interestingly, also appear in Gloucester cathedral showing that the same skilled men (or their descendants) were used for such building projects as and when they were needed, wherever they might be.
Although the fascinatng architecture in Tewkesbury is pretty obvious to any visitor, close inspection will often show up detals otherwise overlooked.
It's worth having a good look, and taking the time to wander the backstreets a little. For example, directly opposite the Abbey main entrance a street leads down to an old mill and some lovely old cottages.
There are alleyways to explore too, the remnants of what was once a thriving Medieval town. Try to imagine them as they once were.not very clean, pretty smelly, resounding with the sounds of street-sellers, livestock being brought to market, arguments, barking dogs, children playing..........