Maybe this will help:

Here is a link that might be useful: Geranium rotundifolium

Here is a website from Ireland for you to check-out. From another source, to quote Trevor Bath/Joy Jones from their 1994 book Hardy Geraniums: "The Roundleaved Cranesbill is an annual. As one would expect, it has rounded leaves, divided to about halfway, wavy-edged with a small crimson spot marking each notch. It has small, pink flowers with a white centre and bluish anthers, and wedge-shaped petals only slightly notched, which appear in mid-summer. It grows on cliffs, walls and banks, mainly in south and east England, but has no real value."

Here is a link that might be useful: Roundleaf Geranium Ireland