2000, Edward G. Mathews, Jr., Lavra, entry in William M. Johnston (editor), Encyclopedia of Monasticism: A-L, page 747,
He left this and, together with a fellow monk, Theoctistus, founded a number of other monasteries and lavras, including the lavra on the cliff in Wadi Mukallik and another in the area of Mishor Adummim.
Source: wiktionary
The other 46 signatories of the Tragos can be assumed to have been hegoumenoi of lavras — no doubt perfectly well-run holy houses in their way, but they lacked the architectural grandeur of the Great Lavra, and they lacked its staying power too.
Source: wiktionary
Also important were the lavras (colonies of hermits) established in Palestine between the fourth and early sixth centuries, notably those founded by St Euthymius (+473) and his disciple St Sabas (+532).
Source: wiktionary