I would like to commend Folk by the Oak at Hatfield House (www.folkbytheoak.com).
I have to declare an interest, as it is the brainchild of my DD and her OH, and they have been running it very successfully for several years. It is such a lovely festival - gentle and child friendly, with high profile world renowned performers as well as the "Acorn Tent" for new young performers to get their first chance (an important part of the ethos of the festival).
Also this year is The Elizabethan Session, in which 8 high profile performers (Nancy Kerr, Martin Simpson, Jim Moray, Bella Hardy, John Smith, Hannah James, Rachel Newton and early music specialist Emily Askew) play brand new music that was inspired by the Elizabethan era during a one week residency in a country house in Herefordshire - also organised by my DD and partner - I am so proud of them and their enterprising spirit!
There are also lots of lovely side attractions (vintage tent etc.) and wonderful things for the children to do.
If you do go, please take special note of the bunting and large banners - I spent a long time making all these!!!