Jean LE BROCQ was the first tenant of Le Fort in Sark in 1565. His brother Pierre was tenant of Le Petit Dixcart. Pierre was a jurat of the first Sark Court appointed on 27 October 1579. Petit Dixcart was held by his family until 1788.
Le Fort stayed in the family until the death of Matthieu LE BROCQ in 1670. It then passed too Gedeon LE FEUVRE who was married to Sara LE BROCQ.
In 1625 Jean LE MASURIER the tenant of La Forge was drowned. That property passed to his brother Elie. Elie's daughter Marie then married Etienne LE BROCQ and it stayed in the family for the next 3 generations until in 1780 Marie LE BROCQ (daughter of Philippe) sold the property to Thomas de Carteret.
From 1732 till 1745 the Jaspellerie property was owned by Marie LE BROCQ who was the widow of the minister Pierre CAMON (minister from 1698-1722). She died in 1745.
As far as I know there are no LE BROCQS resident in Sark today.