It is important that any windblown trees are made safe as soon as possible. My Department’s Native Woodland Conservation Scheme may be appropriate in this case; any grant application must be made through a Registered Forester. More information may be found here gov.ie - Native Woodland Conservation Scheme (www.gov.ie).
It would not be possible to give complete guidance in a situation such as this, without further information. I recommend that the constituent either gets in touch with Teagasc who offer free advice on forestry grants to private landowners (email forestry@teagasc.ie) or that they contact a Registered Forester (see list at www.gov.ie/en/publication/205869-list-of-registered-foresters) who will assist and make suggestions as to what is appropriate for the site.