1668 or 1669 LLH was born at the fortified stronghold of Powis Castle in Montgomeryshire, the youngest but one of a large and distinguished Roman Catholic family.

1722 Several Excellent Methods of Hearing Mass, the earliest book generally recognised as by LLH, was published at Bruges. Long after her death this became part two of The Devotions of the Lady Lucy Herbert of Powis, 1873.

1743 The year before LLH died another volume of her religious writing, Several Methods and Practises of Devotions, was issued at Bruges. In due course this became part one of her collected Devotions in 1873.

19 January 1744 Mother Teresa Joseph (LLH) died at her convent, that of the English Augustinians at Bruges.