Old blush?

how big is that bloom?
alida

Alida, it's 2 1/4" across.

I don't think it's Old Blush, as that's semi-double and these are all just the five petals.

Let's see if the next two blooms (lower right) open with additional petals.
The leaves don't match R. carolina or R. virginiana, nor do they match First Light, a HRugosa with similar colored petals.
It's been a while since I grew Betty Prior, but the foliage and bloom color in the shade may match Betty.

More have opened up, and I think they're all 5 petaled. I googled Betty Prior (below) and it looks VERY close... I'll check all the details on thorns and leaves when I get home. Thanks! :-)

Here is a link that might be useful: Google on Betty Prior

If it is a climber, it might be american pillar.

It looks very much like a wild rose (rosa canina/dog rose or some other wild species) to me.
Maybe there used to be a tea-rose or so once, and the rest of wild plant that it was grown on is still in the ground? Or a rosehip fell there and took root?

Here is a link that might be useful: wild rose

Sorry - I don't see a way to edit a post - I think I got the link wrong.
(I didn't click it in the preview function, didn't think of it - I'm all new to the site, never been to a forum where you couldn't edit your posts - sorry. :) )

Here is a link that might be useful:

Best guess so far is 'Betty Prior', but I don't think that's quite it. It will be easier to tell when the plant is more fully developed.

it looks like nearly wild

I'm growing Betty Prior and that looks like it
or mebbe Else Poulsen? kinfolk?

So it looks a LOT like Betty Prior, but the thing is, it's so tiny that I would have sworn it grew from seed. There's another one just like it about 3' away. The other roses next to it are very different, bright magenta floribundas of some sort, with about 15 petals. Now, it's possible that a Betty Prior or similar rose was once there, died, and got yanked when we did cleanup this spring... It's my first full year in the house, so I wasn't there last summer.

I'll probably pot them both up next spring, move them to full sun (they're growing under a fir tree!), and see what happens. :)